3129372 has 18 divisors (see below), whose sum is σ = 7910448. Its totient is φ = 1043112.

The previous prime is 3129323. The next prime is 3129383. The reversal of 3129372 is 2739213.

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

It is a super-2 number, since 2×3129372² = 19585938228768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43428 + ... + 43499.

Almost surely, 2^3129372 is an apocalyptic number.

It is an amenable number.

3129372 is an abundant number, since it is smaller than the sum of its proper divisors (4781076).

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

3129372 is a wasteful number, since it uses less digits than its factorization.

3129372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86937 (or 86932 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 3129372 is about 1769.0031090985. The cubic root of 3129372 is about 146.2690354360.

It can be divided in two parts, 31 and 29372, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 3129372 in words is "three million, one hundred twenty-nine thousand, three hundred seventy-two".