22150890 has 24 divisors (see below), whose sum is σ = 57592548. Its totient is φ = 5906880.

The previous prime is 22150883. The next prime is 22150927. The reversal of 22150890 is 9805122.

It can be written as a sum of positive squares in 2 ways, for example, as 18429849 + 3721041 = 4293^2 + 1929^2 .

It is a Curzon number.

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, 122971 + ... + 123150.

Almost surely, 2^22150890 is an apocalyptic number.

22150890 is an abundant number, since it is smaller than the sum of its proper divisors (35441658).

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

22150890 is a wasteful number, since it uses less digits than its factorization.

22150890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246134 (or 246131 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 22150890 is about 4706.4732018785. The cubic root of 22150890 is about 280.8430796885.

The spelling of 22150890 in words is "twenty-two million, one hundred fifty thousand, eight hundred ninety".