72994275 has 18 divisors (see below), whose sum is σ = 130741260. Its totient is φ = 38930160.

The previous prime is 72994261. The next prime is 72994283. The reversal of 72994275 is 57249927.

It is not a de Polignac number, because 72994275 - 2⁷ = 72994147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 72994275.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 161985 + ... + 162434.

Almost surely, 2^72994275 is an apocalyptic number.

72994275 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

72994275 is a deficient number, since it is larger than the sum of its proper divisors (57746985).

72994275 is a wasteful number, since it uses less digits than its factorization.

72994275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324435 (or 324427 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 72994275 is about 8543.6687084648. The cubic root of 72994275 is about 417.9229939110.

The spelling of 72994275 in words is "seventy-two million, nine hundred ninety-four thousand, two hundred seventy-five".