22890231 has 48 divisors (see below), whose sum is σ = 42864640. Its totient is φ = 11430720.

The previous prime is 22890181. The next prime is 22890277. The reversal of 22890231 is 13209822.

It is a happy number.

It is not a de Polignac number, because 22890231 - 2⁹ = 22889719 is a prime.

It is a super-2 number, since 2×22890231² = 1047925350466722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22890195 and 22890204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22890031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14826 + ... + 16296.

Almost surely, 2^22890231 is an apocalyptic number.

22890231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22890231 is a deficient number, since it is larger than the sum of its proper divisors (19974409).

22890231 is a wasteful number, since it uses less digits than its factorization.

22890231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516 (or 1513 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 22890231 is about 4784.3736267144. The cubic root of 22890231 is about 283.9335583182.

The spelling of 22890231 in words is "twenty-two million, eight hundred ninety thousand, two hundred thirty-one".