402881790 has 16 divisors (see below), whose sum is σ = 966916368. Its totient is φ = 107435136.

The previous prime is 402881753. The next prime is 402881803. The reversal of 402881790 is 97188204.

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, 6714667 + ... + 6714726.

It is an arithmetic number, because the mean of its divisors is an integer number (60432273).

Almost surely, 2^402881790 is an apocalyptic number.

402881790 is an abundant number, since it is smaller than the sum of its proper divisors (564034578).

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

402881790 is a wasteful number, since it uses less digits than its factorization.

402881790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13429403.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 402881790 is about 20071.9154541862. The cubic root of 402881790 is about 738.5715015618.

The spelling of 402881790 in words is "four hundred two million, eight hundred eighty-one thousand, seven hundred ninety".