3920872 has 16 divisors (see below), whose sum is σ = 7396740. Its totient is φ = 1948416.

The previous prime is 3920867. The next prime is 3920899. The reversal of 3920872 is 2780293.

It can be written as a sum of positive squares in 2 ways, for example, as 3786916 + 133956 = 1946^2 + 366^2 .

It is a plaindrome in base 11.

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, 33 + ... + 2800.

Almost surely, 2^3920872 is an apocalyptic number.

It is an amenable number.

3920872 is a deficient number, since it is larger than the sum of its proper divisors (3475868).

3920872 is a wasteful number, since it uses less digits than its factorization.

3920872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012 (or 3008 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 3920872 is about 1980.1191883319. The cubic root of 3920872 is about 157.6863939209.

The spelling of 3920872 in words is "three million, nine hundred twenty thousand, eight hundred seventy-two".