23015144 has 64 divisors (see below), whose sum is σ = 48522240. Its totient is φ = 10183680.

The previous prime is 23015143. The next prime is 23015159. The reversal of 23015144 is 44151032.

It is not an unprimeable number, because it can be changed into a prime (23015141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223397 + ... + 223499.

It is an arithmetic number, because the mean of its divisors is an integer number (758160).

Almost surely, 2^23015144 is an apocalyptic number.

It is an amenable number.

23015144 is an abundant number, since it is smaller than the sum of its proper divisors (25507096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23015144 is a wasteful number, since it uses less digits than its factorization.

23015144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 23015144 is about 4797.4101346456. The cubic root of 23015144 is about 284.4491009889.

Adding to 23015144 its reverse (44151032), we get a palindrome (67166176).

The spelling of 23015144 in words is "twenty-three million, fifteen thousand, one hundred forty-four".