22128104 has 8 divisors (see below), whose sum is σ = 41490210. Its totient is φ = 11064048.

The previous prime is 22128091. The next prime is 22128107. The reversal of 22128104 is 40182122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14455204 + 7672900 = 3802^2 + 2770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (22128107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1382999 + ... + 1383014.

Almost surely, 2^22128104 is an apocalyptic number.

It is an amenable number.

22128104 is a deficient number, since it is larger than the sum of its proper divisors (19362106).

22128104 is a wasteful number, since it uses less digits than its factorization.

22128104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766019 (or 2766015 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 22128104 is about 4704.0518704623. The cubic root of 22128104 is about 280.7467481803.

The spelling of 22128104 in words is "twenty-two million, one hundred twenty-eight thousand, one hundred four".