22890406 has 16 divisors (see below), whose sum is σ = 42808320. Its totient is φ = 8918280.

The previous prime is 22890401. The next prime is 22890409. The reversal of 22890406 is 60409822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22890401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74166 + ... + 74473.

It is an arithmetic number, because the mean of its divisors is an integer number (2675520).

Almost surely, 2^22890406 is an apocalyptic number.

22890406 is a deficient number, since it is larger than the sum of its proper divisors (19917914).

22890406 is a wasteful number, since it uses less digits than its factorization.

22890406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148659.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 22890406 is about 4784.3919153849. The cubic root of 22890406 is about 283.9342818910.

The spelling of 22890406 in words is "twenty-two million, eight hundred ninety thousand, four hundred six".