2138924 has 12 divisors (see below), whose sum is σ = 3872400. Its totient is φ = 1032528.

The previous prime is 2138909. The next prime is 2138971. The reversal of 2138924 is 4298312.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9104 + ... + 9335.

It is an arithmetic number, because the mean of its divisors is an integer number (322700).

2^2138924 is an apocalyptic number.

It is an amenable number.

2138924 is a deficient number, since it is larger than the sum of its proper divisors (1733476).

2138924 is a wasteful number, since it uses less digits than its factorization.

2138924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18472 (or 18470 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 2138924 is about 1462.5060683635. The cubic root of 2138924 is about 128.8442725522.

The spelling of 2138924 in words is "two million, one hundred thirty-eight thousand, nine hundred twenty-four".