22209984 has 56 divisors (see below), whose sum is σ = 65298320. Its totient is φ = 7402752.

The previous prime is 22209983. The next prime is 22209989. The reversal of 22209984 is 48990222.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22209983) by changing a digit.

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, 4699 + ... + 8154.

Almost surely, 2^22209984 is an apocalyptic number.

22209984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22209984 is an abundant number, since it is smaller than the sum of its proper divisors (43088336).

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

22209984 is a wasteful number, since it uses less digits than its factorization.

22209984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12874 (or 12858 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 22209984 is about 4712.7469696558. The cubic root of 22209984 is about 281.0926017081.

The spelling of 22209984 in words is "twenty-two million, two hundred nine thousand, nine hundred eighty-four".