22049890 has 16 divisors (see below), whose sum is σ = 39760632. Its totient is φ = 8804224.

The previous prime is 22049887. The next prime is 22049903. The reversal of 22049890 is 9894022.

It can be written as a sum of positive squares in 4 ways, for example, as 21874329 + 175561 = 4677^2 + 419^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5142 + ... + 8398.

Almost surely, 2^22049890 is an apocalyptic number.

22049890 is a deficient number, since it is larger than the sum of its proper divisors (17710742).

22049890 is a wasteful number, since it uses less digits than its factorization.

22049890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 22049890 is about 4695.7310399979. The cubic root of 22049890 is about 280.4155818591.

The spelling of 22049890 in words is "twenty-two million, forty-nine thousand, eight hundred ninety".