22180974 has 16 divisors (see below), whose sum is σ = 44522112. Its totient is φ = 7366968.

The previous prime is 22180973. The next prime is 22180981. The reversal of 22180974 is 47908122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22180973) 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, 4834 + ... + 8229.

It is an arithmetic number, because the mean of its divisors is an integer number (2782632).

Almost surely, 2^22180974 is an apocalyptic number.

22180974 is an abundant number, since it is smaller than the sum of its proper divisors (22341138).

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

22180974 is a wasteful number, since it uses less digits than its factorization.

22180974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13351.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 22180974 is about 4709.6681411751. The cubic root of 22180974 is about 280.9701635389.

The spelling of 22180974 in words is "twenty-two million, one hundred eighty thousand, nine hundred seventy-four".