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258542480 = 24573153281
BaseRepresentation
bin11110110100100…
…00101110010000
3200000111022121102
433122100232100
51012141324410
641353243532
76256401110
oct1732205620
9600438542
10258542480
11122a38879
12727035a8
1341743a21
14264a1040
1517a702a5
hexf690b90

258542480 has 160 divisors (see below), whose sum is σ = 725096448. Its totient is φ = 83865600.

The previous prime is 258542467. The next prime is 258542483. The reversal of 258542480 is 84245852.

It is not an unprimeable number, because it can be changed into a prime (258542483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 919940 + ... + 920220.

Almost surely, 2258542480 is an apocalyptic number.

258542480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258542480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362548224).

258542480 is an abundant number, since it is smaller than the sum of its proper divisors (466553968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258542480 is a wasteful number, since it uses less digits than its factorization.

258542480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 38.

The square root of 258542480 is about 16079.2562017029. The cubic root of 258542480 is about 637.0555497528.

The spelling of 258542480 in words is "two hundred fifty-eight million, five hundred forty-two thousand, four hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 31 35 40 53 56 62 70 80 106 112 124 140 155 212 217 248 265 280 281 310 371 424 434 496 530 560 562 620 742 848 868 1060 1085 1124 1240 1405 1484 1643 1736 1855 1967 2120 2170 2248 2480 2810 2968 3286 3472 3710 3934 4240 4340 4496 5620 5936 6572 7420 7868 8215 8680 8711 9835 11240 11501 13144 14840 14893 15736 16430 17360 17422 19670 22480 23002 26288 29680 29786 31472 32860 34844 39340 43555 46004 57505 59572 60977 65720 69688 74465 78680 87110 92008 104251 115010 119144 121954 131440 139376 148930 157360 174220 184016 208502 230020 238288 243908 297860 304885 348440 417004 460040 461683 487816 521255 595720 609770 696880 834008 920080 923366 975632 1042510 1191440 1219540 1668016 1846732 2085020 2308415 2439080 3231781 3693464 4170040 4616830 4878160 6463562 7386928 8340080 9233660 12927124 16158905 18467320 25854248 32317810 36934640 51708496 64635620 129271240 258542480