72381394 has 8 divisors (see below), whose sum is σ = 108615600. Its totient is φ = 36176196.

The previous prime is 72381383. The next prime is 72381403. The reversal of 72381394 is 49318327.

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

It is a super-3 number, since 3×72381394³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757 + ... + 12055.

It is an arithmetic number, because the mean of its divisors is an integer number (13576950).

Almost surely, 2^72381394 is an apocalyptic number.

72381394 is a deficient number, since it is larger than the sum of its proper divisors (36234206).

72381394 is a wasteful number, since it uses less digits than its factorization.

72381394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14504.

The product of its digits is 36288, while the sum is 37.

The square root of 72381394 is about 8507.7255479946. The cubic root of 72381394 is about 416.7500375750.

The spelling of 72381394 in words is "seventy-two million, three hundred eighty-one thousand, three hundred ninety-four".