72304775 has 6 divisors (see below), whose sum is σ = 89657952. Its totient is φ = 57843800.

The previous prime is 72304759. The next prime is 72304777. The reversal of 72304775 is 57740327.

It is not a de Polignac number, because 72304775 - 2⁴ = 72304759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72304777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1446071 + ... + 1446120.

It is an arithmetic number, because the mean of its divisors is an integer number (14942992).

Almost surely, 2^72304775 is an apocalyptic number.

72304775 is a deficient number, since it is larger than the sum of its proper divisors (17353177).

72304775 is a wasteful number, since it uses less digits than its factorization.

72304775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892201 (or 2892196 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 72304775 is about 8503.2214483688. The cubic root of 72304775 is about 416.6029360304.

The spelling of 72304775 in words is "seventy-two million, three hundred four thousand, seven hundred seventy-five".