402725660 has 24 divisors (see below), whose sum is σ = 859590816. Its totient is φ = 158448960.

The previous prime is 402725651. The next prime is 402725663. The reversal of 402725660 is 66527204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402725663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163832 + ... + 166271.

It is an arithmetic number, because the mean of its divisors is an integer number (35816284).

Almost surely, 2^402725660 is an apocalyptic number.

It is an amenable number.

402725660 is an abundant number, since it is smaller than the sum of its proper divisors (456865156).

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

402725660 is a wasteful number, since it uses less digits than its factorization.

402725660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330173 (or 330171 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 402725660 is about 20068.0258122218. The cubic root of 402725660 is about 738.4760822846.

The spelling of 402725660 in words is "four hundred two million, seven hundred twenty-five thousand, six hundred sixty".