22402280 has 32 divisors (see below), whose sum is σ = 50608800. Its totient is φ = 8924736.

The previous prime is 22402271. The next prime is 22402283. The reversal of 22402280 is 8220422.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (22402283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10331 + ... + 12309.

It is an arithmetic number, because the mean of its divisors is an integer number (1581525).

Almost surely, 2^22402280 is an apocalyptic number.

22402280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22402280 is an abundant number, since it is smaller than the sum of its proper divisors (28206520).

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

22402280 is a wasteful number, since it uses less digits than its factorization.

22402280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273 (or 2269 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 22402280 is about 4733.1046893133. The cubic root of 22402280 is about 281.9015131493.

The spelling of 22402280 in words is "twenty-two million, four hundred two thousand, two hundred eighty".