73072769 has 12 divisors (see below), whose sum is σ = 92731248. Its totient is φ = 56939400.

The previous prime is 73072759. The next prime is 73072807. The reversal of 73072769 is 96727037.

It is not a de Polignac number, because 73072769 - 2²⁴ = 56295553 is a prime.

It is a super-2 number, since 2×73072769² = 10679259138654722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73072759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67247 + ... + 68324.

It is an arithmetic number, because the mean of its divisors is an integer number (7727604).

Almost surely, 2^73072769 is an apocalyptic number.

It is an amenable number.

73072769 is a deficient number, since it is larger than the sum of its proper divisors (19658479).

73072769 is a wasteful number, since it uses less digits than its factorization.

73072769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135596 (or 135589 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 41.

The square root of 73072769 is about 8548.2611682143. The cubic root of 73072769 is about 418.0727439921.

The spelling of 73072769 in words is "seventy-three million, seventy-two thousand, seven hundred sixty-nine".