402168564 has 60 divisors (see below), whose sum is σ = 1201547424. Its totient is φ = 114904656.

The previous prime is 402168553. The next prime is 402168581. The reversal of 402168564 is 465861204.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86394 + ... + 90929.

Almost surely, 2^402168564 is an apocalyptic number.

It is an amenable number.

402168564 is an abundant number, since it is smaller than the sum of its proper divisors (799378860).

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

402168564 is a wasteful number, since it uses less digits than its factorization.

402168564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177346 (or 177335 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 402168564 is about 20054.1408192922. The cubic root of 402168564 is about 738.1354104098.

The spelling of 402168564 in words is "four hundred two million, one hundred sixty-eight thousand, five hundred sixty-four".