72322537 has 8 divisors (see below), whose sum is σ = 82796672. Its totient is φ = 61884000.

The previous prime is 72322529. The next prime is 72322541. The reversal of 72322537 is 73522327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72322537 - 2³ = 72322529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72322499 and 72322508.

It is not an unprimeable number, because it can be changed into a prime (72322567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4389 + ... + 12802.

It is an arithmetic number, because the mean of its divisors is an integer number (10349584).

Almost surely, 2^72322537 is an apocalyptic number.

It is an amenable number.

72322537 is a deficient number, since it is larger than the sum of its proper divisors (10474135).

72322537 is a wasteful number, since it uses less digits than its factorization.

72322537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17799.

The product of its digits is 17640, while the sum is 31.

The square root of 72322537 is about 8504.2658119323. The cubic root of 72322537 is about 416.6370467122.

The spelling of 72322537 in words is "seventy-two million, three hundred twenty-two thousand, five hundred thirty-seven".