72272112 has 40 divisors (see below), whose sum is σ = 203677440. Its totient is φ = 21900480.

The previous prime is 72272111. The next prime is 72272149. The reversal of 72272112 is 21127227.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72272111) 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, 67912 + ... + 68967.

It is an arithmetic number, because the mean of its divisors is an integer number (5091936).

Almost surely, 2^72272112 is an apocalyptic number.

It is an amenable number.

72272112 is an abundant number, since it is smaller than the sum of its proper divisors (131405328).

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

72272112 is a wasteful number, since it uses less digits than its factorization.

72272112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136901 (or 136895 counting only the distinct ones).

The product of its digits is 784, while the sum is 24.

The square root of 72272112 is about 8501.3006063778. The cubic root of 72272112 is about 416.5401944331.

Adding to 72272112 its reverse (21127227), we get a palindrome (93399339).

It can be divided in two parts, 7227 and 2112, that added together give a palindrome (9339).

The spelling of 72272112 in words is "seventy-two million, two hundred seventy-two thousand, one hundred twelve".