22890985 has 16 divisors (see below), whose sum is σ = 29945664. Its totient is φ = 16696512.

The previous prime is 22890983. The next prime is 22891009. The reversal of 22890985 is 58909822.

It is a cyclic number.

It is not a de Polignac number, because 22890985 - 2¹ = 22890983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22890983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3274 + ... + 7516.

It is an arithmetic number, because the mean of its divisors is an integer number (1871604).

Almost surely, 2^22890985 is an apocalyptic number.

It is an amenable number.

22890985 is a deficient number, since it is larger than the sum of its proper divisors (7054679).

22890985 is a wasteful number, since it uses less digits than its factorization.

22890985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 22890985 is about 4784.4524242592. The cubic root of 22890985 is about 283.9366758571.

The spelling of 22890985 in words is "twenty-two million, eight hundred ninety thousand, nine hundred eighty-five".