72915933 has 4 divisors (see below), whose sum is σ = 97221248. Its totient is φ = 48610620.

The previous prime is 72915929. The next prime is 72915949. The reversal of 72915933 is 33951927.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33951927 = 3 ⋅11317309.

It is not a de Polignac number, because 72915933 - 2² = 72915929 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 72915891 and 72915900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72915133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12152653 + ... + 12152658.

It is an arithmetic number, because the mean of its divisors is an integer number (24305312).

Almost surely, 2^72915933 is an apocalyptic number.

It is an amenable number.

72915933 is a deficient number, since it is larger than the sum of its proper divisors (24305315).

72915933 is a wasteful number, since it uses less digits than its factorization.

72915933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24305314.

The product of its digits is 51030, while the sum is 39.

The square root of 72915933 is about 8539.0826790704. The cubic root of 72915933 is about 417.7734267320.

The spelling of 72915933 in words is "seventy-two million, nine hundred fifteen thousand, nine hundred thirty-three".