23129144 has 16 divisors (see below), whose sum is σ = 44539800. Its totient is φ = 11251872.

The previous prime is 23129111. The next prime is 23129159. The reversal of 23129144 is 44192132.

It is a congruent number.

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, 38774 + ... + 39365.

Almost surely, 2^23129144 is an apocalyptic number.

It is an amenable number.

23129144 is a deficient number, since it is larger than the sum of its proper divisors (21410656).

23129144 is a wasteful number, since it uses less digits than its factorization.

23129144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78182 (or 78178 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 23129144 is about 4809.2768687195. The cubic root of 23129144 is about 284.9179778329.

The spelling of 23129144 in words is "twenty-three million, one hundred twenty-nine thousand, one hundred forty-four".