22645280 has 48 divisors (see below), whose sum is σ = 61145280. Its totient is φ = 7763712.

The previous prime is 22645267. The next prime is 22645291. The reversal of 22645280 is 8254622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8990 + ... + 11229.

It is an arithmetic number, because the mean of its divisors is an integer number (1273860).

Almost surely, 2^22645280 is an apocalyptic number.

22645280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22645280 is an abundant number, since it is smaller than the sum of its proper divisors (38500000).

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

22645280 is a wasteful number, since it uses less digits than its factorization.

22645280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20241 (or 20233 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 22645280 is about 4758.7057063870. The cubic root of 22645280 is about 282.9171220725.

The spelling of 22645280 in words is "twenty-two million, six hundred forty-five thousand, two hundred eighty".