22215942 has 24 divisors (see below), whose sum is σ = 55011216. Its totient is φ = 6347376.

The previous prime is 22215937. The next prime is 22215989. The reversal of 22215942 is 24951222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 88033 + ... + 88284.

It is an arithmetic number, because the mean of its divisors is an integer number (2292134).

Almost surely, 2^22215942 is an apocalyptic number.

22215942 is an abundant number, since it is smaller than the sum of its proper divisors (32795274).

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

22215942 is a wasteful number, since it uses less digits than its factorization.

22215942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176332 (or 176329 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 22215942 is about 4713.3790426826. The cubic root of 22215942 is about 281.1177345491.

The spelling of 22215942 in words is "twenty-two million, two hundred fifteen thousand, nine hundred forty-two".