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253725880 = 23523793491
BaseRepresentation
bin11110001111110…
…00110010111000
3122200102121110211
433013320302320
51004423212010
641102120504
76200430412
oct1707706270
9580377424
10253725880
11120249011
1270b80134
1340748575
14259a99b2
151741d08a
hexf1f8cb8

253725880 has 64 divisors (see below), whose sum is σ = 603417600. Its totient is φ = 95821440.

The previous prime is 253725847. The next prime is 253725883. The reversal of 253725880 is 88527352.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253725883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70935 + ... + 74425.

It is an arithmetic number, because the mean of its divisors is an integer number (9428400).

Almost surely, 2253725880 is an apocalyptic number.

253725880 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 253725880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301708800).

253725880 is an abundant number, since it is smaller than the sum of its proper divisors (349691720).

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

253725880 is a wasteful number, since it uses less digits than its factorization.

253725880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604 (or 3600 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 253725880 is about 15928.7752197085. The cubic root of 253725880 is about 633.0746484328.

The spelling of 253725880 in words is "two hundred fifty-three million, seven hundred twenty-five thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 23 40 46 79 92 115 158 184 230 316 395 460 632 790 920 1580 1817 3160 3491 3634 6982 7268 9085 13964 14536 17455 18170 27928 34910 36340 69820 72680 80293 139640 160586 275789 321172 401465 551578 642344 802930 1103156 1378945 1605860 2206312 2757890 3211720 5515780 6343147 11031560 12686294 25372588 31715735 50745176 63431470 126862940 253725880