402104656 has 10 divisors (see below), whose sum is σ = 779077802. Its totient is φ = 201052320.

The previous prime is 402104629. The next prime is 402104683. The reversal of 402104656 is 656401204.

It is an interprime number because it is at equal distance from previous prime (402104629) and next prime (402104683).

It can be written as a sum of positive squares in only one way, i.e., 367105600 + 34999056 = 19160^2 + 5916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12565755 + ... + 12565786.

Almost surely, 2^402104656 is an apocalyptic number.

It is an amenable number.

402104656 is a deficient number, since it is larger than the sum of its proper divisors (376973146).

402104656 is a wasteful number, since it uses less digits than its factorization.

402104656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25131549 (or 25131543 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 402104656 is about 20052.5473693494. The cubic root of 402104656 is about 738.0963096769.

The spelling of 402104656 in words is "four hundred two million, one hundred four thousand, six hundred fifty-six".