2138604 has 24 divisors (see below), whose sum is σ = 5374320. Its totient is φ = 657984.

The previous prime is 2138593. The next prime is 2138623. The reversal of 2138604 is 4068312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6699 + ... + 7010.

It is an arithmetic number, because the mean of its divisors is an integer number (223930).

2^2138604 is an apocalyptic number.

It is an amenable number.

2138604 is an abundant number, since it is smaller than the sum of its proper divisors (3235716).

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

2138604 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 2138604 = (1230846)₁₁.

2138604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13729 (or 13727 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2138604 is about 1462.3966630159. The cubic root of 2138604 is about 128.8378468566.

The spelling of 2138604 in words is "two million, one hundred thirty-eight thousand, six hundred four".