22191048 has 48 divisors (see below), whose sum is σ = 65566800. Its totient is φ = 6724320.

The previous prime is 22191019. The next prime is 22191073. The reversal of 22191048 is 84019122.

It is a super-2 number, since 2×22191048² = 984885222676608, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13218 + ... + 14801.

It is an arithmetic number, because the mean of its divisors is an integer number (1365975).

Almost surely, 2^22191048 is an apocalyptic number.

It is an amenable number.

22191048 is an abundant number, since it is smaller than the sum of its proper divisors (43375752).

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

22191048 is a wasteful number, since it uses less digits than its factorization.

22191048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28042 (or 28035 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 22191048 is about 4710.7375218749. The cubic root of 22191048 is about 281.0126934570.

The spelling of 22191048 in words is "twenty-two million, one hundred ninety-one thousand, forty-eight".