72112386 has 48 divisors (see below), whose sum is σ = 154522368. Its totient is φ = 22411200.

The previous prime is 72112367. The next prime is 72112387. The reversal of 72112386 is 68321127.

It is a super-2 number, since 2×72112386² = 10400392429225992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72112387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156196 + ... + 156656.

It is an arithmetic number, because the mean of its divisors is an integer number (3219216).

Almost surely, 2^72112386 is an apocalyptic number.

72112386 is an abundant number, since it is smaller than the sum of its proper divisors (82409982).

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

72112386 is a wasteful number, since it uses less digits than its factorization.

72112386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 526 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 72112386 is about 8491.9012005557. The cubic root of 72112386 is about 416.2331079186.

The spelling of 72112386 in words is "seventy-two million, one hundred twelve thousand, three hundred eighty-six".