23138668 has 12 divisors (see below), whose sum is σ = 46277392. Its totient is φ = 9916560.

The previous prime is 23138659. The next prime is 23138677. The reversal of 23138668 is 86683132.

It is an interprime number because it is at equal distance from previous prime (23138659) and next prime (23138677).

23138668 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413163 + ... + 413218.

Almost surely, 2^23138668 is an apocalyptic number.

23138668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23138668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

23138668 is a wasteful number, since it uses less digits than its factorization.

23138668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826392 (or 826390 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 23138668 is about 4810.2669364600. The cubic root of 23138668 is about 284.9570798196.

The spelling of 23138668 in words is "twenty-three million, one hundred thirty-eight thousand, six hundred sixty-eight".