72099572 has 12 divisors (see below), whose sum is σ = 131660256. Its totient is φ = 34482360.

The previous prime is 72099553. The next prime is 72099613. The reversal of 72099572 is 27599027.

It is a happy number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 391754 + ... + 391937.

It is an arithmetic number, because the mean of its divisors is an integer number (10971688).

Almost surely, 2^72099572 is an apocalyptic number.

It is an amenable number.

72099572 is a deficient number, since it is larger than the sum of its proper divisors (59560684).

72099572 is a wasteful number, since it uses less digits than its factorization.

72099572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783718 (or 783716 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 72099572 is about 8491.1466834580. The cubic root of 72099572 is about 416.2084522975.

The spelling of 72099572 in words is "seventy-two million, ninety-nine thousand, five hundred seventy-two".