22477072 has 40 divisors (see below), whose sum is σ = 45961344. Its totient is φ = 10627584.

The previous prime is 22477067. The next prime is 22477073. The reversal of 22477072 is 27077422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22477073) 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, 37608 + ... + 38200.

Almost surely, 2^22477072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22477072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22980672).

22477072 is an abundant number, since it is smaller than the sum of its proper divisors (23484272).

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

22477072 is a wasteful number, since it uses less digits than its factorization.

22477072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 22477072 is about 4740.9990508331. Note that the first 3 decimals coincide. The cubic root of 22477072 is about 282.2148824107.

The spelling of 22477072 in words is "twenty-two million, four hundred seventy-seven thousand, seventy-two".