402064004 has 12 divisors (see below), whose sum is σ = 727874700. Its totient is φ = 194099808.

The previous prime is 402063979. The next prime is 402064007. The reversal of 402064004 is 400460204.

It can be written as a sum of positive squares in 2 ways, for example, as 215796100 + 186267904 = 14690^2 + 13648^2 .

It is not an unprimeable number, because it can be changed into a prime (402064007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1732919 + ... + 1733150.

It is an arithmetic number, because the mean of its divisors is an integer number (60656225).

Almost surely, 2^402064004 is an apocalyptic number.

It is an amenable number.

402064004 is a deficient number, since it is larger than the sum of its proper divisors (325810696).

402064004 is a wasteful number, since it uses less digits than its factorization.

402064004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466102 (or 3466100 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 402064004 is about 20051.5337069263. The cubic root of 402064004 is about 738.0714354707.

The spelling of 402064004 in words is "four hundred two million, sixty-four thousand, four".