22199148 has 18 divisors (see below), whose sum is σ = 56114604. Its totient is φ = 7399704.

The previous prime is 22199147. The next prime is 22199159. The reversal of 22199148 is 84199122.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 616643 = 22199148 / (2 + 2 + 1 + 9 + 9 + 1 + 4 + 8).

It is not an unprimeable number, because it can be changed into a prime (22199147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308286 + ... + 308357.

It is an arithmetic number, because the mean of its divisors is an integer number (3117478).

Almost surely, 2^22199148 is an apocalyptic number.

It is an amenable number.

22199148 is an abundant number, since it is smaller than the sum of its proper divisors (33915456).

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

22199148 is a wasteful number, since it uses less digits than its factorization.

22199148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616653 (or 616648 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 22199148 is about 4711.5971814237. The cubic root of 22199148 is about 281.0468803046.

The spelling of 22199148 in words is "twenty-two million, one hundred ninety-nine thousand, one hundred forty-eight".