402670464 has 64 divisors (see below), whose sum is σ = 1222400640. Its totient is φ = 115047936.

The previous prime is 402670441. The next prime is 402670487. The reversal of 402670464 is 464076204.

It is an interprime number because it is at equal distance from previous prime (402670441) and next prime (402670487).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72214 + ... + 77589.

It is an arithmetic number, because the mean of its divisors is an integer number (19100010).

Almost surely, 2^402670464 is an apocalyptic number.

It is an amenable number.

402670464 is an abundant number, since it is smaller than the sum of its proper divisors (819730176).

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

402670464 is a wasteful number, since it uses less digits than its factorization.

402670464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149827 (or 149815 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 402670464 is about 20066.6505426292. The cubic root of 402670464 is about 738.4423431976.

The spelling of 402670464 in words is "four hundred two million, six hundred seventy thousand, four hundred sixty-four".