23139546 has 8 divisors (see below), whose sum is σ = 46279104. Its totient is φ = 7713180.

The previous prime is 23139497. The next prime is 23139553. The reversal of 23139546 is 64593132.

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

23139546 is an admirable number.

It is a super-2 number, since 2×23139546² = 1070877178172232, which contains 22 as substring.

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, 1928290 + ... + 1928301.

It is an arithmetic number, because the mean of its divisors is an integer number (5784888).

Almost surely, 2^23139546 is an apocalyptic number.

23139546 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.

23139546 is a wasteful number, since it uses less digits than its factorization.

23139546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856596.

The product of its digits is 19440, while the sum is 33.

The square root of 23139546 is about 4810.3581987208. The cubic root of 23139546 is about 284.9606840195.

The spelling of 23139546 in words is "twenty-three million, one hundred thirty-nine thousand, five hundred forty-six".