3870972 has 36 divisors (see below), whose sum is σ = 11183536. Its totient is φ = 1105920.

The previous prime is 3870959. The next prime is 3870983. The reversal of 3870972 is 2790783.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7429 + ... + 7932.

Almost surely, 2^3870972 is an apocalyptic number.

It is an amenable number.

3870972 is an abundant number, since it is smaller than the sum of its proper divisors (7312564).

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

3870972 is a wasteful number, since it uses less digits than its factorization.

3870972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15378 (or 15373 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 3870972 is about 1967.4785894642. The cubic root of 3870972 is about 157.0145901759.

It can be divided in two parts, 38709 and 72, that added together give a triangular number (38781 = T₂₇₈).

The spelling of 3870972 in words is "three million, eight hundred seventy thousand, nine hundred seventy-two".