23549138 has 16 divisors (see below), whose sum is σ = 35997696. Its totient is φ = 11551680.

The previous prime is 23549117. The next prime is 23549153. The reversal of 23549138 is 83194532.

It is a junction number, because it is equal to n+sod(n) for n = 23549098 and 23549107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54170 + ... + 54602.

It is an arithmetic number, because the mean of its divisors is an integer number (2249856).

Almost surely, 2^23549138 is an apocalyptic number.

23549138 is a deficient number, since it is larger than the sum of its proper divisors (12448558).

23549138 is a wasteful number, since it uses less digits than its factorization.

23549138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889.

The product of its digits is 25920, while the sum is 35.

The square root of 23549138 is about 4852.7454085291. The cubic root of 23549138 is about 286.6322183833.

The spelling of 23549138 in words is "twenty-three million, five hundred forty-nine thousand, one hundred thirty-eight".