72047212 has 12 divisors (see below), whose sum is σ = 126148680. Its totient is φ = 36004736.

The previous prime is 72047197. The next prime is 72047233. The reversal of 72047212 is 21274027.

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 3 ways as a sum of consecutive naturals, for example, 7239 + ... + 14017.

It is an arithmetic number, because the mean of its divisors is an integer number (10512390).

Almost surely, 2^72047212 is an apocalyptic number.

It is an amenable number.

72047212 is a deficient number, since it is larger than the sum of its proper divisors (54101468).

72047212 is a wasteful number, since it uses less digits than its factorization.

72047212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9440 (or 9438 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 72047212 is about 8488.0629121137. The cubic root of 72047212 is about 416.1076752217.

The spelling of 72047212 in words is "seventy-two million, forty-seven thousand, two hundred twelve".