22352280 has 64 divisors (see below), whose sum is σ = 71007840. Its totient is φ = 5609472.

The previous prime is 22352279. The next prime is 22352293. The reversal of 22352280 is 8225322.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22352280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3439 + ... + 7518.

Almost surely, 2^22352280 is an apocalyptic number.

22352280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22352280 is an abundant number, since it is smaller than the sum of its proper divisors (48655560).

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

22352280 is a wasteful number, since it uses less digits than its factorization.

22352280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10988 (or 10984 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 22352280 is about 4727.8197935201. The cubic root of 22352280 is about 281.6916301222.

The spelling of 22352280 in words is "twenty-two million, three hundred fifty-two thousand, two hundred eighty".