72782475 has 12 divisors (see below), whose sum is σ = 120333816. Its totient is φ = 38817280.

The previous prime is 72782473. The next prime is 72782527. The reversal of 72782475 is 57428727.

It is not a de Polignac number, because 72782475 - 2¹ = 72782473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72782473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485142 + ... + 485291.

It is an arithmetic number, because the mean of its divisors is an integer number (10027818).

Almost surely, 2^72782475 is an apocalyptic number.

72782475 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

72782475 is a deficient number, since it is larger than the sum of its proper divisors (47551341).

72782475 is a wasteful number, since it uses less digits than its factorization.

72782475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970446 (or 970441 counting only the distinct ones).

The product of its digits is 219520, while the sum is 42.

The square root of 72782475 is about 8531.2645604271. The cubic root of 72782475 is about 417.5183875631.

The spelling of 72782475 in words is "seventy-two million, seven hundred eighty-two thousand, four hundred seventy-five".