72293212 has 12 divisors (see below), whose sum is σ = 126985320. Its totient is φ = 36011696.

The previous prime is 72293183. The next prime is 72293237. The reversal of 72293212 is 21239227.

It is a congruent number.

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, 32518 + ... + 34669.

It is an arithmetic number, because the mean of its divisors is an integer number (10582110).

Almost surely, 2^72293212 is an apocalyptic number.

It is an amenable number.

72293212 is a deficient number, since it is larger than the sum of its proper divisors (54692108).

72293212 is a wasteful number, since it uses less digits than its factorization.

72293212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67460 (or 67458 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 72293212 is about 8502.5415023980. The cubic root of 72293212 is about 416.5807270935.

The spelling of 72293212 in words is "seventy-two million, two hundred ninety-three thousand, two hundred twelve".