72823451 has 16 divisors (see below), whose sum is σ = 77635584. Its totient is φ = 68169024.

The previous prime is 72823423. The next prime is 72823463. The reversal of 72823451 is 15432827.

It is a cyclic number.

It is not a de Polignac number, because 72823451 - 2¹⁰ = 72822427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72823151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312431 + ... + 312663.

It is an arithmetic number, because the mean of its divisors is an integer number (4852224).

Almost surely, 2^72823451 is an apocalyptic number.

72823451 is a deficient number, since it is larger than the sum of its proper divisors (4812133).

72823451 is a wasteful number, since it uses less digits than its factorization.

72823451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

The product of its digits is 13440, while the sum is 32.

The square root of 72823451 is about 8533.6657422236. The cubic root of 72823451 is about 417.5967261277.

The spelling of 72823451 in words is "seventy-two million, eight hundred twenty-three thousand, four hundred fifty-one".