3138732 has 18 divisors (see below), whose sum is σ = 7934108. Its totient is φ = 1046232.

The previous prime is 3138691. The next prime is 3138767. The reversal of 3138732 is 2378313.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 3138696 and 3138705.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 43558 + ... + 43629.

Almost surely, 2^3138732 is an apocalyptic number.

It is an amenable number.

3138732 is an abundant number, since it is smaller than the sum of its proper divisors (4795376).

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

3138732 is a wasteful number, since it uses less digits than its factorization.

3138732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87197 (or 87192 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 3138732 is about 1771.6466916403. The cubic root of 3138732 is about 146.4147212644.

It can be divided in two parts, 313 and 8732, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 3138732 in words is "three million, one hundred thirty-eight thousand, seven hundred thirty-two".