22290890 has 8 divisors (see below), whose sum is σ = 40123620. Its totient is φ = 8916352.

The previous prime is 22290883. The next prime is 22290901. The reversal of 22290890 is 9809222.

It can be written as a sum of positive squares in 2 ways, for example, as 20529961 + 1760929 = 4531^2 + 1327^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114535 + ... + 1114554.

Almost surely, 2^22290890 is an apocalyptic number.

22290890 is a deficient number, since it is larger than the sum of its proper divisors (17832730).

22290890 is a wasteful number, since it uses less digits than its factorization.

22290890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229096.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 22290890 is about 4721.3229078300. The cubic root of 22290890 is about 281.4335072368.

The spelling of 22290890 in words is "twenty-two million, two hundred ninety thousand, eight hundred ninety".