22890066 has 16 divisors (see below), whose sum is σ = 45854688. Its totient is φ = 7617600.

The previous prime is 22890031. The next prime is 22890073. The reversal of 22890066 is 66009822.

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, 1386 + ... + 6906.

It is an arithmetic number, because the mean of its divisors is an integer number (2865918).

Almost surely, 2^22890066 is an apocalyptic number.

22890066 is an abundant number, since it is smaller than the sum of its proper divisors (22964622).

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

22890066 is a wasteful number, since it uses less digits than its factorization.

22890066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6217.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 22890066 is about 4784.3563830467. The cubic root of 22890066 is about 283.9328760890.

Adding to 22890066 its reverse (66009822), we get a palindrome (88899888).

The spelling of 22890066 in words is "twenty-two million, eight hundred ninety thousand, sixty-six".