402447556 has 12 divisors (see below), whose sum is σ = 804895168. Its totient is φ = 172477512.

The previous prime is 402447553. The next prime is 402447623. The reversal of 402447556 is 655744204.

402447556 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (402447553) 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, 7186536 + ... + 7186591.

Almost surely, 2^402447556 is an apocalyptic number.

It is an amenable number.

402447556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

402447556 is a wasteful number, since it uses less digits than its factorization.

402447556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14373138 (or 14373136 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 37.

The square root of 402447556 is about 20061.0955832427. The cubic root of 402447556 is about 738.3060571577.

The spelling of 402447556 in words is "four hundred two million, four hundred forty-seven thousand, five hundred fifty-six".