22072280 has 32 divisors (see below), whose sum is σ = 50349600. Its totient is φ = 8706816.

The previous prime is 22072247. The next prime is 22072283. The reversal of 22072280 is 8227022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22072283) 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, 860 + ... + 6699.

It is an arithmetic number, because the mean of its divisors is an integer number (1573425).

Almost surely, 2^22072280 is an apocalyptic number.

22072280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22072280 is an abundant number, since it is smaller than the sum of its proper divisors (28277320).

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

22072280 is a wasteful number, since it uses less digits than its factorization.

22072280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7643 (or 7639 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 22072280 is about 4698.1145154200. The cubic root of 22072280 is about 280.5104633749.

The spelling of 22072280 in words is "twenty-two million, seventy-two thousand, two hundred eighty".