3971272 has 32 divisors (see below), whose sum is σ = 7879680. Its totient is φ = 1872640.

The previous prime is 3971267. The next prime is 3971281. The reversal of 3971272 is 2721793.

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, 20697 + ... + 20887.

It is an arithmetic number, because the mean of its divisors is an integer number (246240).

Almost surely, 2^3971272 is an apocalyptic number.

It is an amenable number.

3971272 is a deficient number, since it is larger than the sum of its proper divisors (3908408).

3971272 is a wasteful number, since it uses less digits than its factorization.

3971272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 329 counting only the distinct ones).

The product of its digits is 5292, while the sum is 31.

The square root of 3971272 is about 1992.8050582031. The cubic root of 3971272 is about 158.3591679605.

The spelling of 3971272 in words is "three million, nine hundred seventy-one thousand, two hundred seventy-two".