22450720 has 24 divisors (see below), whose sum is σ = 53040204. Its totient is φ = 8980224.

The previous prime is 22450709. The next prime is 22450721. The reversal of 22450720 is 2705422.

It can be written as a sum of positive squares in 2 ways, for example, as 20903184 + 1547536 = 4572^2 + 1244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22450691 and 22450700.

It is not an unprimeable number, because it can be changed into a prime (22450721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69999 + ... + 70318.

Almost surely, 2^22450720 is an apocalyptic number.

22450720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22450720 is an abundant number, since it is smaller than the sum of its proper divisors (30589484).

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

22450720 is a wasteful number, since it uses less digits than its factorization.

22450720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140332 (or 140324 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 22450720 is about 4738.2190747157. The cubic root of 22450720 is about 282.1045502047.

The spelling of 22450720 in words is "twenty-two million, four hundred fifty thousand, seven hundred twenty".