252957680 has 40 divisors (see below), whose sum is σ = 613701792. Its totient is φ = 96783104.

The previous prime is 252957673. The next prime is 252957701. The reversal of 252957680 is 86759252.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66899 + ... + 70578.

Almost surely, 2^252957680 is an apocalyptic number.

252957680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252957680 is an abundant number, since it is smaller than the sum of its proper divisors (360744112).

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

252957680 is a wasteful number, since it uses less digits than its factorization.

252957680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137513 (or 137507 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 252957680 is about 15904.6433471487. The cubic root of 252957680 is about 632.4350873616.

The spelling of 252957680 in words is "two hundred fifty-two million, nine hundred fifty-seven thousand, six hundred eighty".