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257872870080 = 26345719231127
BaseRepresentation
bin1111000000101001101…
…0111011101011000000
3220122121121022002120000
43300022122323223000
513211110423320310
6314244250320000
724426221141520
oct3601232735300
9818547262500
10257872870080
119a3aa570051
1241b89129000
131b41817c9b7
14c6a4265680
156a940a14c0
hex3c0a6bbac0

257872870080 has 1680 divisors, whose sum is σ = 1151105826816. Its totient is φ = 53613342720.

The previous prime is 257872870007. The next prime is 257872870097. The reversal of 257872870080 is 80078278752.

It is a tau number, because it is divible by the number of its divisors (1680).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 257872869999 and 257872870026.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 2030494977 + ... + 2030495103.

Almost surely, 2257872870080 is an apocalyptic number.

257872870080 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 257872870080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575552913408).

257872870080 is an abundant number, since it is smaller than the sum of its proper divisors (893232956736).

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

257872870080 is a wasteful number, since it uses less digits than its factorization.

257872870080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 3512320, while the sum is 54.

The spelling of 257872870080 in words is "two hundred fifty-seven billion, eight hundred seventy-two million, eight hundred seventy thousand, eighty".