72280499 has 32 divisors (see below), whose sum is σ = 82736640. Its totient is φ = 62899200.

The previous prime is 72280493. The next prime is 72280517. The reversal of 72280499 is 99408227.

It is a cyclic number.

It is not a de Polignac number, because 72280499 - 2¹² = 72276403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72280493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1363757 + ... + 1363809.

It is an arithmetic number, because the mean of its divisors is an integer number (2585520).

Almost surely, 2^72280499 is an apocalyptic number.

72280499 is a deficient number, since it is larger than the sum of its proper divisors (10456141).

72280499 is a wasteful number, since it uses less digits than its factorization.

72280499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 72280499 is about 8501.7938695313. The cubic root of 72280499 is about 416.5563066299.

The spelling of 72280499 in words is "seventy-two million, two hundred eighty thousand, four hundred ninety-nine".