22008890 has 8 divisors (see below), whose sum is σ = 39616020. Its totient is φ = 8803552.

The previous prime is 22008871. The next prime is 22008893. The reversal of 22008890 is 9880022.

It can be written as a sum of positive squares in 2 ways, for example, as 20151121 + 1857769 = 4489^2 + 1363^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22008893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1100435 + ... + 1100454.

Almost surely, 2^22008890 is an apocalyptic number.

22008890 is a deficient number, since it is larger than the sum of its proper divisors (17607130).

22008890 is a wasteful number, since it uses less digits than its factorization.

22008890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200896.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 22008890 is about 4691.3633412900. The cubic root of 22008890 is about 280.2416706035.

The spelling of 22008890 in words is "twenty-two million, eight thousand, eight hundred ninety".