72923432 has 16 divisors (see below), whose sum is σ = 142676640. Its totient is φ = 34876336.

The previous prime is 72923419. The next prime is 72923443. The reversal of 72923432 is 23432927.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197978 + ... + 198345.

It is an arithmetic number, because the mean of its divisors is an integer number (8917290).

Almost surely, 2^72923432 is an apocalyptic number.

It is an amenable number.

72923432 is a deficient number, since it is larger than the sum of its proper divisors (69753208).

72923432 is a wasteful number, since it uses less digits than its factorization.

72923432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396352 (or 396348 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 72923432 is about 8539.5217664691. The cubic root of 72923432 is about 417.7877481357.

The spelling of 72923432 in words is "seventy-two million, nine hundred twenty-three thousand, four hundred thirty-two".