72293616 has 30 divisors (see below), whose sum is σ = 202322120. Its totient is φ = 24097824.

The previous prime is 72293593. The next prime is 72293653. The reversal of 72293616 is 61639227.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 250876 + ... + 251163.

Almost surely, 2^72293616 is an apocalyptic number.

It is an amenable number.

72293616 is an abundant number, since it is smaller than the sum of its proper divisors (130028504).

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

72293616 is a wasteful number, since it uses less digits than its factorization.

72293616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502053 (or 502044 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 72293616 is about 8502.5652599671. The cubic root of 72293616 is about 416.5815030922.

The spelling of 72293616 in words is "seventy-two million, two hundred ninety-three thousand, six hundred sixteen".