72800074 has 4 divisors (see below), whose sum is σ = 109200114. Its totient is φ = 36400036.

The previous prime is 72800033. The next prime is 72800087. The reversal of 72800074 is 47000827.

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., 72505225 + 294849 = 8515^2 + 543^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18200017 + ... + 18200020.

Almost surely, 2^72800074 is an apocalyptic number.

72800074 is a deficient number, since it is larger than the sum of its proper divisors (36400040).

72800074 is a wasteful number, since it uses less digits than its factorization.

72800074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36400039.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 72800074 is about 8532.2959395464. The cubic root of 72800074 is about 417.5520372108.

The spelling of 72800074 in words is "seventy-two million, eight hundred thousand, seventy-four".