402881670 has 24 divisors (see below), whose sum is σ = 1047492576. Its totient is φ = 107435088.

The previous prime is 402881651. The next prime is 402881683. The reversal of 402881670 is 76188204.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2238142 + ... + 2238321.

It is an arithmetic number, because the mean of its divisors is an integer number (43645524).

Almost surely, 2^402881670 is an apocalyptic number.

402881670 is an abundant number, since it is smaller than the sum of its proper divisors (644610906).

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

402881670 is a wasteful number, since it uses less digits than its factorization.

402881670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476476 (or 4476473 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 402881670 is about 20071.9124649347. The cubic root of 402881670 is about 738.5714282329.

The spelling of 402881670 in words is "four hundred two million, eight hundred eighty-one thousand, six hundred seventy".