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268372980 = 223351633049
BaseRepresentation
bin11111111111100…
…00101111110100
3200200222202112000
433333300233310
51022200413410
642344055300
76436063341
oct1777605764
9620882460
10268372980
11128542657
1275a64530
13437a63a5
14278dd7c8
1518862dc0
hexfff0bf4

268372980 has 96 divisors (see below), whose sum is σ = 840336000. Its totient is φ = 71103744.

The previous prime is 268372939. The next prime is 268372981. The reversal of 268372980 is 89273862.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268372981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86496 + ... + 89544.

It is an arithmetic number, because the mean of its divisors is an integer number (8753500).

Almost surely, 2268372980 is an apocalyptic number.

268372980 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 268372980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420168000).

268372980 is an abundant number, since it is smaller than the sum of its proper divisors (571963020).

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

268372980 is a wasteful number, since it uses less digits than its factorization.

268372980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230 (or 3222 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 268372980 is about 16382.0932728391. The cubic root of 268372980 is about 645.0295281236.

It can be divided in two parts, 268 and 372980, that added together give a cube (373248 = 723).

The spelling of 268372980 in words is "two hundred sixty-eight million, three hundred seventy-two thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 163 180 270 326 489 540 652 815 978 1467 1630 1956 2445 2934 3049 3260 4401 4890 5868 6098 7335 8802 9147 9780 12196 14670 15245 17604 18294 22005 27441 29340 30490 36588 44010 45735 54882 60980 82323 88020 91470 109764 137205 164646 182940 274410 329292 411615 496987 548820 823230 993974 1490961 1646460 1987948 2484935 2981922 4472883 4969870 5963844 7454805 8945766 9939740 13418649 14909610 17891532 22364415 26837298 29819220 44728830 53674596 67093245 89457660 134186490 268372980