72446931 has 12 divisors (see below), whose sum is σ = 105340560. Its totient is φ = 47977200.

The previous prime is 72446921. The next prime is 72446993. The reversal of 72446931 is 13964427.

It is not a de Polignac number, because 72446931 - 2⁹ = 72446419 is a prime.

It is a super-2 number, since 2×72446931² = 10497115622637522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72446921) 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, 25296 + ... + 28013.

It is an arithmetic number, because the mean of its divisors is an integer number (8778380).

Almost surely, 2^72446931 is an apocalyptic number.

72446931 is a deficient number, since it is larger than the sum of its proper divisors (32893629).

72446931 is a wasteful number, since it uses less digits than its factorization.

72446931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53466 (or 53463 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 72446931 is about 8511.5762934958. The cubic root of 72446931 is about 416.8757803318.

The spelling of 72446931 in words is "seventy-two million, four hundred forty-six thousand, nine hundred thirty-one".