72331375 has 16 divisors (see below), whose sum is σ = 92375712. Its totient is φ = 56515200.

The previous prime is 72331333. The next prime is 72331381. The reversal of 72331375 is 57313327.

It is not a de Polignac number, because 72331375 - 2²¹ = 70234223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1354 + ... + 12103.

It is an arithmetic number, because the mean of its divisors is an integer number (5773482).

Almost surely, 2^72331375 is an apocalyptic number.

72331375 is a deficient number, since it is larger than the sum of its proper divisors (20044337).

72331375 is a wasteful number, since it uses less digits than its factorization.

72331375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13515 (or 13505 counting only the distinct ones).

The product of its digits is 13230, while the sum is 31.

The square root of 72331375 is about 8504.7854176340. The cubic root of 72331375 is about 416.6540173938.

The spelling of 72331375 in words is "seventy-two million, three hundred thirty-one thousand, three hundred seventy-five".