4638402 has 12 divisors (see below), whose sum is σ = 10049910. Its totient is φ = 1546128.

The previous prime is 4638397. The next prime is 4638407. The reversal of 4638402 is 2048364.

It is an interprime number because it is at equal distance from previous prime (4638397) and next prime (4638407).

It can be written as a sum of positive squares in only one way, i.e., 3426201 + 1212201 = 1851^2 + 1101^2 .

It is a super-2 number, since 2×4638402² = 43029546227208, which contains 22 as substring.

It is a plaindrome in base 11.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (4638407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128827 + ... + 128862.

Almost surely, 2^4638402 is an apocalyptic number.

4638402 is an abundant number, since it is smaller than the sum of its proper divisors (5411508).

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

4638402 is a wasteful number, since it uses less digits than its factorization.

4638402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257697 (or 257694 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 4638402 is about 2153.6949644738. The cubic root of 4638402 is about 166.7718686923.

The spelling of 4638402 in words is "four million, six hundred thirty-eight thousand, four hundred two".