23490144 has 36 divisors (see below), whose sum is σ = 66800916. Its totient is φ = 7829952.

The previous prime is 23490127. The next prime is 23490149. The reversal of 23490144 is 44109432.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23490149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40494 + ... + 41069.

It is an arithmetic number, because the mean of its divisors is an integer number (1855581).

Almost surely, 2^23490144 is an apocalyptic number.

23490144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23490144 is an abundant number, since it is smaller than the sum of its proper divisors (43310772).

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

23490144 is a wasteful number, since it uses less digits than its factorization.

23490144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81579 (or 81568 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 23490144 is about 4846.6631820253. The cubic root of 23490144 is about 286.3926664997.

Adding to 23490144 its reverse (44109432), we get a palindrome (67599576).

The spelling of 23490144 in words is "twenty-three million, four hundred ninety thousand, one hundred forty-four".