23149138 has 8 divisors (see below), whose sum is σ = 36766332. Its totient is φ = 10893696.

The previous prime is 23149111. The next prime is 23149153. The reversal of 23149138 is 83194132.

It can be written as a sum of positive squares in 2 ways, for example, as 22344529 + 804609 = 4727^2 + 897^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340395 + ... + 340462.

Almost surely, 2^23149138 is an apocalyptic number.

23149138 is a deficient number, since it is larger than the sum of its proper divisors (13617194).

23149138 is a wasteful number, since it uses less digits than its factorization.

23149138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680876.

The product of its digits is 5184, while the sum is 31.

The square root of 23149138 is about 4811.3551105692. The cubic root of 23149138 is about 285.0000533497. Note that the first 4 decimals are identical.

The spelling of 23149138 in words is "twenty-three million, one hundred forty-nine thousand, one hundred thirty-eight".