402545404 has 24 divisors (see below), whose sum is σ = 730074240. Its totient is φ = 193978176.

The previous prime is 402545399. The next prime is 402545413. The reversal of 402545404 is 404545204.

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, 67554 + ... + 73270.

It is an arithmetic number, because the mean of its divisors is an integer number (30419760).

Almost surely, 2^402545404 is an apocalyptic number.

It is an amenable number.

402545404 is a deficient number, since it is larger than the sum of its proper divisors (327528836).

402545404 is a wasteful number, since it uses less digits than its factorization.

402545404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357 (or 6355 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 402545404 is about 20063.5341851828. The cubic root of 402545404 is about 738.3658876590.

The spelling of 402545404 in words is "four hundred two million, five hundred forty-five thousand, four hundred four".