256701132 has 72 divisors (see below), whose sum is σ = 662328576. Its totient is φ = 83814624.

The previous prime is 256701131. The next prime is 256701143. The reversal of 256701132 is 231107652.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 256701096 and 256701105.

It is not an unprimeable number, because it can be changed into a prime (256701131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396433 + ... + 397079.

It is an arithmetic number, because the mean of its divisors is an integer number (9199008).

Almost surely, 2^256701132 is an apocalyptic number.

It is an amenable number.

256701132 is an abundant number, since it is smaller than the sum of its proper divisors (405627444).

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

256701132 is a wasteful number, since it uses less digits than its factorization.

256701132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 256701132 is about 16021.8953934920. The cubic root of 256701132 is about 635.5395682583.

Adding to 256701132 its reverse (231107652), we get a palindrome (487808784).

The spelling of 256701132 in words is "two hundred fifty-six million, seven hundred one thousand, one hundred thirty-two".