72038388 has 12 divisors (see below), whose sum is σ = 168089600. Its totient is φ = 24012792.

The previous prime is 72038387. The next prime is 72038399. The reversal of 72038388 is 88383027.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72038381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3001588 + ... + 3001611.

Almost surely, 2^72038388 is an apocalyptic number.

It is an amenable number.

72038388 is an abundant number, since it is smaller than the sum of its proper divisors (96051212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72038388 is a wasteful number, since it uses less digits than its factorization.

72038388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003206 (or 6003204 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 72038388 is about 8487.5431074016. The cubic root of 72038388 is about 416.0906868982.

The spelling of 72038388 in words is "seventy-two million, thirty-eight thousand, three hundred eighty-eight".