22239546 has 16 divisors (see below), whose sum is σ = 50833344. Its totient is φ = 6354144.

The previous prime is 22239541. The next prime is 22239571. The reversal of 22239546 is 64593222.

It is a super-2 number, since 2×22239546² = 989194812572232, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22239541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264715 + ... + 264798.

It is an arithmetic number, because the mean of its divisors is an integer number (3177084).

Almost surely, 2^22239546 is an apocalyptic number.

22239546 is an abundant number, since it is smaller than the sum of its proper divisors (28593798).

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

22239546 is a wasteful number, since it uses less digits than its factorization.

22239546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529525.

The product of its digits is 25920, while the sum is 33.

The square root of 22239546 is about 4715.8823140532. The cubic root of 22239546 is about 281.2172599914.

The spelling of 22239546 in words is "twenty-two million, two hundred thirty-nine thousand, five hundred forty-six".