22205280 has 48 divisors (see below), whose sum is σ = 69948144. Its totient is φ = 5921280.

The previous prime is 22205279. The next prime is 22205303. The reversal of 22205280 is 8250222.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22651 + ... + 23610.

It is an arithmetic number, because the mean of its divisors is an integer number (1457253).

Almost surely, 2^22205280 is an apocalyptic number.

22205280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22205280 is an abundant number, since it is smaller than the sum of its proper divisors (47742864).

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

22205280 is a wasteful number, since it uses less digits than its factorization.

22205280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46279 (or 46271 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 22205280 is about 4712.2478712394. The cubic root of 22205280 is about 281.0727554840.

The spelling of 22205280 in words is "twenty-two million, two hundred five thousand, two hundred eighty".