22249984 has 20 divisors (see below), whose sum is σ = 44457534. Its totient is φ = 11124736.

The previous prime is 22249979. The next prime is 22250017. The reversal of 22249984 is 48994222.

It can be written as a sum of positive squares in only one way, i.e., 18249984 + 4000000 = 4272^2 + 2000^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21217 + ... + 22240.

Almost surely, 2^22249984 is an apocalyptic number.

It is an amenable number.

22249984 is a deficient number, since it is larger than the sum of its proper divisors (22207550).

22249984 is an frugal number, since it uses more digits than its factorization.

22249984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43475 (or 43459 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 22249984 is about 4716.9888700314. The cubic root of 22249984 is about 281.2612489986.

The spelling of 22249984 in words is "twenty-two million, two hundred forty-nine thousand, nine hundred eighty-four".