23920144 has 10 divisors (see below), whose sum is σ = 46345310. Its totient is φ = 11960064.

The previous prime is 23920121. The next prime is 23920147. The reversal of 23920144 is 44102932.

It can be written as a sum of positive squares in only one way, i.e., 19254544 + 4665600 = 4388^2 + 2160^2 .

It is not an unprimeable number, because it can be changed into a prime (23920147) by changing a digit.

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 as a sum of consecutive naturals, namely, 747489 + ... + 747520.

It is an arithmetic number, because the mean of its divisors is an integer number (4634531).

Almost surely, 2^23920144 is an apocalyptic number.

It is an amenable number.

23920144 is a deficient number, since it is larger than the sum of its proper divisors (22425166).

23920144 is a wasteful number, since it uses less digits than its factorization.

23920144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495017 (or 1495011 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 23920144 is about 4890.8224257276. The cubic root of 23920144 is about 288.1296355693.

The spelling of 23920144 in words is "twenty-three million, nine hundred twenty thousand, one hundred forty-four".