22091948 has 12 divisors (see below), whose sum is σ = 39604152. Its totient is φ = 10776480.

The previous prime is 22091947. The next prime is 22091999. The reversal of 22091948 is 84919022.

It is not an unprimeable number, because it can be changed into a prime (22091947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67190 + ... + 67517.

It is an arithmetic number, because the mean of its divisors is an integer number (3300346).

Almost surely, 2^22091948 is an apocalyptic number.

It is an amenable number.

22091948 is a deficient number, since it is larger than the sum of its proper divisors (17512204).

22091948 is a wasteful number, since it uses less digits than its factorization.

22091948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134752 (or 134750 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 22091948 is about 4700.2072294740. The cubic root of 22091948 is about 280.5937570190.

The spelling of 22091948 in words is "twenty-two million, ninety-one thousand, nine hundred forty-eight".