72373738 has 8 divisors (see below), whose sum is σ = 108908388. Its totient is φ = 36070944.

The previous prime is 72373723. The next prime is 72373751. The reversal of 72373738 is 83737327.

It can be written as a sum of positive squares in 2 ways, for example, as 72029169 + 344569 = 8487^2 + 587^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 72373738.

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, 57181 + ... + 58432.

Almost surely, 2^72373738 is an apocalyptic number.

72373738 is a deficient number, since it is larger than the sum of its proper divisors (36534650).

72373738 is a wasteful number, since it uses less digits than its factorization.

72373738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115928.

The product of its digits is 148176, while the sum is 40.

The square root of 72373738 is about 8507.2755921035. The cubic root of 72373738 is about 416.7353434176.

The spelling of 72373738 in words is "seventy-two million, three hundred seventy-three thousand, seven hundred thirty-eight".