8638402 has 8 divisors (see below), whose sum is σ = 13056912. Its totient is φ = 4286100.

The previous prime is 8638381. The next prime is 8638403. The reversal of 8638402 is 2048368.

It is a happy number.

8638402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8638402² = 149243978227208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8638403) 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, 16224 + ... + 16747.

It is an arithmetic number, because the mean of its divisors is an integer number (1632114).

Almost surely, 2^8638402 is an apocalyptic number.

8638402 is a deficient number, since it is larger than the sum of its proper divisors (4418510).

8638402 is a wasteful number, since it uses less digits than its factorization.

8638402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33104.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 8638402 is about 2939.1158534498. The cubic root of 8638402 is about 205.1844621658.

The spelling of 8638402 in words is "eight million, six hundred thirty-eight thousand, four hundred two".