72283212 has 24 divisors (see below), whose sum is σ = 187401200. Its totient is φ = 24094368.

The previous prime is 72283187. The next prime is 72283261. The reversal of 72283212 is 21238227.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 7 ways as a sum of consecutive naturals, for example, 334537 + ... + 334752.

Almost surely, 2^72283212 is an apocalyptic number.

It is an amenable number.

72283212 is an abundant number, since it is smaller than the sum of its proper divisors (115117988).

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

72283212 is a wasteful number, since it uses less digits than its factorization.

72283212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669302 (or 669294 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 72283212 is about 8501.9534225965. The cubic root of 72283212 is about 416.5615182852.

It can be divided in two parts, 7228 and 3212, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 72283212 in words is "seventy-two million, two hundred eighty-three thousand, two hundred twelve".