72470793 has 4 divisors (see below), whose sum is σ = 96627728. Its totient is φ = 48313860.

The previous prime is 72470759. The next prime is 72470803. The reversal of 72470793 is 39707427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 72470793 - 2¹⁸ = 72208649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72450793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12078463 + ... + 12078468.

It is an arithmetic number, because the mean of its divisors is an integer number (24156932).

Almost surely, 2^72470793 is an apocalyptic number.

It is an amenable number.

72470793 is a deficient number, since it is larger than the sum of its proper divisors (24156935).

72470793 is a wasteful number, since it uses less digits than its factorization.

72470793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24156934.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 72470793 is about 8512.9779160996. The cubic root of 72470793 is about 416.9215443956.

It can be divided in two parts, 724 and 70793, that added together give a palindrome (71517).

The spelling of 72470793 in words is "seventy-two million, four hundred seventy thousand, seven hundred ninety-three".