23402144 has 24 divisors (see below), whose sum is σ = 47199348. Its totient is φ = 11415040.

The previous prime is 23402143. The next prime is 23402161. The reversal of 23402144 is 44120432.

It can be written as a sum of positive squares in 2 ways, for example, as 23232400 + 169744 = 4820^2 + 412^2 .

It is not an unprimeable number, because it can be changed into a prime (23402143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7607 + ... + 10230.

Almost surely, 2^23402144 is an apocalyptic number.

It is an amenable number.

23402144 is an abundant number, since it is smaller than the sum of its proper divisors (23797204).

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

23402144 is a wasteful number, since it uses less digits than its factorization.

23402144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17888 (or 17880 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 23402144 is about 4837.5762526290. The cubic root of 23402144 is about 286.0345859359.

Adding to 23402144 its reverse (44120432), we get a palindrome (67522576).

The spelling of 23402144 in words is "twenty-three million, four hundred two thousand, one hundred forty-four".