257616132 has 12 divisors (see below), whose sum is σ = 601104336. Its totient is φ = 85872040.

The previous prime is 257616131. The next prime is 257616137. The reversal of 257616132 is 231616752.

257616132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 257616093 and 257616102.

It is not an unprimeable number, because it can be changed into a prime (257616131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10733994 + ... + 10734017.

It is an arithmetic number, because the mean of its divisors is an integer number (50092028).

Almost surely, 2^257616132 is an apocalyptic number.

It is an amenable number.

257616132 is an abundant number, since it is smaller than the sum of its proper divisors (343488204).

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

257616132 is a wasteful number, since it uses less digits than its factorization.

257616132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21468018 (or 21468016 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 257616132 is about 16050.4246672791. The cubic root of 257616132 is about 636.2937905358.

The spelling of 257616132 in words is "two hundred fifty-seven million, six hundred sixteen thousand, one hundred thirty-two".