72484915 has 4 divisors (see below), whose sum is σ = 86981904. Its totient is φ = 57987928.

The previous prime is 72484901. The next prime is 72484931. The reversal of 72484915 is 51948427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51948427 = 53 ⋅980159.

It is a cyclic number.

It is not a de Polignac number, because 72484915 - 2⁵ = 72484883 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7248487 + ... + 7248496.

It is an arithmetic number, because the mean of its divisors is an integer number (21745476).

Almost surely, 2^72484915 is an apocalyptic number.

72484915 is a deficient number, since it is larger than the sum of its proper divisors (14496989).

72484915 is a wasteful number, since it uses less digits than its factorization.

72484915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14496988.

The product of its digits is 80640, while the sum is 40.

The square root of 72484915 is about 8513.8073151793. The cubic root of 72484915 is about 416.9486237352.

The spelling of 72484915 in words is "seventy-two million, four hundred eighty-four thousand, nine hundred fifteen".