402716128 has 24 divisors (see below), whose sum is σ = 839486592. Its totient is φ = 189513216.

The previous prime is 402716117. The next prime is 402716141. The reversal of 402716128 is 821617204.

It is a self number, because there is not a number n which added to its sum of digits gives 402716128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369600 + ... + 370687.

It is an arithmetic number, because the mean of its divisors is an integer number (34978608).

Almost surely, 2^402716128 is an apocalyptic number.

It is an amenable number.

402716128 is an abundant number, since it is smaller than the sum of its proper divisors (436770464).

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

402716128 is a wasteful number, since it uses less digits than its factorization.

402716128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740314 (or 740306 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 402716128 is about 20067.7883185965. The cubic root of 402716128 is about 738.4702559779.

The spelling of 402716128 in words is "four hundred two million, seven hundred sixteen thousand, one hundred twenty-eight".