22724180 has 24 divisors (see below), whose sum is σ = 48031368. Its totient is φ = 9030528.

The previous prime is 22724173. The next prime is 22724183. The reversal of 22724180 is 8142722.

It can be written as a sum of positive squares in 4 ways, for example, as 1948816 + 20775364 = 1396^2 + 4558^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22724183) 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, 479 + ... + 6758.

It is an arithmetic number, because the mean of its divisors is an integer number (2001307).

Almost surely, 2^22724180 is an apocalyptic number.

22724180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22724180 is an abundant number, since it is smaller than the sum of its proper divisors (25307188).

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

22724180 is a wasteful number, since it uses less digits than its factorization.

22724180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403 (or 7401 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 22724180 is about 4766.9885672194. The cubic root of 22724180 is about 283.2453182980.

The spelling of 22724180 in words is "twenty-two million, seven hundred twenty-four thousand, one hundred eighty".