72402499 has 8 divisors (see below), whose sum is σ = 79294320. Its totient is φ = 65699616.

The previous prime is 72402467. The next prime is 72402503. The reversal of 72402499 is 99420427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72402499 - 2⁵ = 72402467 is a prime.

It is a super-2 number, since 2×72402499² = 10484243722890002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72400499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46432 + ... + 47965.

It is an arithmetic number, because the mean of its divisors is an integer number (9911790).

Almost surely, 2^72402499 is an apocalyptic number.

72402499 is a deficient number, since it is larger than the sum of its proper divisors (6891821).

72402499 is a wasteful number, since it uses less digits than its factorization.

72402499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94469.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 72402499 is about 8508.9658008480. The cubic root of 72402499 is about 416.7905390277.

The spelling of 72402499 in words is "seventy-two million, four hundred two thousand, four hundred ninety-nine".