72768754 has 4 divisors (see below), whose sum is σ = 109153134. Its totient is φ = 36384376.

The previous prime is 72768739. The next prime is 72768763. The reversal of 72768754 is 45786727.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72165025 + 603729 = 8495^2 + 777^2 .

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18192187 + ... + 18192190.

Almost surely, 2^72768754 is an apocalyptic number.

72768754 is a deficient number, since it is larger than the sum of its proper divisors (36384380).

72768754 is a wasteful number, since it uses less digits than its factorization.

72768754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36384379.

The product of its digits is 658560, while the sum is 46.

The square root of 72768754 is about 8530.4603627237. The cubic root of 72768754 is about 417.4921489673.

The spelling of 72768754 in words is "seventy-two million, seven hundred sixty-eight thousand, seven hundred fifty-four".