22029918 has 16 divisors (see below), whose sum is σ = 44497296. Its totient is φ = 7270400.

The previous prime is 22029913. The next prime is 22029923. The reversal of 22029918 is 81992022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22029913) and next prime (22029923).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22029913) 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, 17571 + ... + 18782.

It is an arithmetic number, because the mean of its divisors is an integer number (2781081).

Almost surely, 2^22029918 is an apocalyptic number.

22029918 is an abundant number, since it is smaller than the sum of its proper divisors (22467378).

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

22029918 is a wasteful number, since it uses less digits than its factorization.

22029918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36459.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 22029918 is about 4693.6039457969. The cubic root of 22029918 is about 280.3308928236.

The spelling of 22029918 in words is "twenty-two million, twenty-nine thousand, nine hundred eighteen".