3115638 has 16 divisors (see below), whose sum is σ = 6923760. Its totient is φ = 1038528.

The previous prime is 3115633. The next prime is 3115643. The reversal of 3115638 is 8365113.

It is an interprime number because it is at equal distance from previous prime (3115633) and next prime (3115643).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3115633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28795 + ... + 28902.

It is an arithmetic number, because the mean of its divisors is an integer number (432735).

Almost surely, 2^3115638 is an apocalyptic number.

3115638 is an abundant number, since it is smaller than the sum of its proper divisors (3808122).

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

3115638 is a wasteful number, since it uses less digits than its factorization.

3115638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57708 (or 57702 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 3115638 is about 1765.1169932897. The cubic root of 3115638 is about 146.0547427168.

The spelling of 3115638 in words is "three million, one hundred fifteen thousand, six hundred thirty-eight".