72298388 has 12 divisors (see below), whose sum is σ = 126645792. Its totient is φ = 36113880.

The previous prime is 72298381. The next prime is 72298393. The reversal of 72298388 is 88389227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72298381) 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, 3920 + ... + 12647.

It is an arithmetic number, because the mean of its divisors is an integer number (10553816).

Almost surely, 2^72298388 is an apocalyptic number.

It is an amenable number.

72298388 is a deficient number, since it is larger than the sum of its proper divisors (54347404).

72298388 is a wasteful number, since it uses less digits than its factorization.

72298388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17662 (or 17660 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 72298388 is about 8502.8458765286. The cubic root of 72298388 is about 416.5906688770.

The spelling of 72298388 in words is "seventy-two million, two hundred ninety-eight thousand, three hundred eighty-eight".