72823751 has 48 divisors (see below), whose sum is σ = 104952960. Its totient is φ = 49533120.

The previous prime is 72823741. The next prime is 72823757. The reversal of 72823751 is 15732827.

It is not a de Polignac number, because 72823751 - 2⁶ = 72823687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72823757) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 132860 + ... + 133406.

It is an arithmetic number, because the mean of its divisors is an integer number (2186520).

Almost surely, 2^72823751 is an apocalyptic number.

72823751 is a deficient number, since it is larger than the sum of its proper divisors (32129209).

72823751 is a wasteful number, since it uses less digits than its factorization.

72823751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 597 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 72823751 is about 8533.6833196457. The cubic root of 72823751 is about 417.5972995640.

The spelling of 72823751 in words is "seventy-two million, eight hundred twenty-three thousand, seven hundred fifty-one".