23138806 has 8 divisors (see below), whose sum is σ = 34941600. Its totient is φ = 11491608.

The previous prime is 23138783. The next prime is 23138809. The reversal of 23138806 is 60883132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23138809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38526 + ... + 39121.

It is an arithmetic number, because the mean of its divisors is an integer number (4367700).

Almost surely, 2^23138806 is an apocalyptic number.

23138806 is a deficient number, since it is larger than the sum of its proper divisors (11802794).

23138806 is a wasteful number, since it uses less digits than its factorization.

23138806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77798.

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

The square root of 23138806 is about 4810.2812807569. The cubic root of 23138806 is about 284.9576463172.

The spelling of 23138806 in words is "twenty-three million, one hundred thirty-eight thousand, eight hundred six".