72038420 has 24 divisors (see below), whose sum is σ = 156162048. Its totient is φ = 27885600.

The previous prime is 72038413. The next prime is 72038423. The reversal of 72038420 is 2483027.

It is a self number, because there is not a number n which added to its sum of digits gives 72038420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72038423) 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, 57476 + ... + 58715.

It is an arithmetic number, because the mean of its divisors is an integer number (6506752).

Almost surely, 2^72038420 is an apocalyptic number.

It is an amenable number.

72038420 is an abundant number, since it is smaller than the sum of its proper divisors (84123628).

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

72038420 is a wasteful number, since it uses less digits than its factorization.

72038420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116231 (or 116229 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 72038420 is about 8487.5449925170. The cubic root of 72038420 is about 416.0907485084.

The spelling of 72038420 in words is "seventy-two million, thirty-eight thousand, four hundred twenty".