72937381 has 8 divisors (see below), whose sum is σ = 81069984. Its totient is φ = 65055120.

The previous prime is 72937363. The next prime is 72937387. The reversal of 72937381 is 18373927.

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 72937381 - 2⁷ = 72937253 is a prime.

It is a super-2 number, since 2×72937381² = 10639723094278322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72937387) 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, 61971 + ... + 63136.

It is an arithmetic number, because the mean of its divisors is an integer number (10133748).

Almost surely, 2^72937381 is an apocalyptic number.

It is an amenable number.

72937381 is a deficient number, since it is larger than the sum of its proper divisors (8132603).

72937381 is a wasteful number, since it uses less digits than its factorization.

72937381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125171.

The product of its digits is 63504, while the sum is 40.

The square root of 72937381 is about 8540.3384593352. The cubic root of 72937381 is about 417.8143849775.

The spelling of 72937381 in words is "seventy-two million, nine hundred thirty-seven thousand, three hundred eighty-one".