22439472 has 40 divisors (see below), whose sum is σ = 63240000. Its totient is φ = 6799680.

The previous prime is 22439429. The next prime is 22439489. The reversal of 22439472 is 27493422.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 20722 + ... + 21777.

It is an arithmetic number, because the mean of its divisors is an integer number (1581000).

Almost surely, 2^22439472 is an apocalyptic number.

22439472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22439472 is an abundant number, since it is smaller than the sum of its proper divisors (40800528).

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

22439472 is a wasteful number, since it uses less digits than its factorization.

22439472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42521 (or 42515 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 22439472 is about 4737.0319821593. The cubic root of 22439472 is about 282.0574300820.

The spelling of 22439472 in words is "twenty-two million, four hundred thirty-nine thousand, four hundred seventy-two".