402155564 has 24 divisors (see below), whose sum is σ = 716830800. Its totient is φ = 197357760.

The previous prime is 402155563. The next prime is 402155581. The reversal of 402155564 is 465551204.

It is a self number, because there is not a number n which added to its sum of digits gives 402155564.

It is not an unprimeable number, because it can be changed into a prime (402155563) 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, 240122 + ... + 241790.

It is an arithmetic number, because the mean of its divisors is an integer number (29867950).

Almost surely, 2^402155564 is an apocalyptic number.

It is an amenable number.

402155564 is a deficient number, since it is larger than the sum of its proper divisors (314675236).

402155564 is a wasteful number, since it uses less digits than its factorization.

402155564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753 (or 2751 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 402155564 is about 20053.8166940859. The cubic root of 402155564 is about 738.1274569755.

The spelling of 402155564 in words is "four hundred two million, one hundred fifty-five thousand, five hundred sixty-four".