23143456 has 24 divisors (see below), whose sum is σ = 52073280. Its totient is φ = 9918528.

The previous prime is 23143429. The next prime is 23143459. The reversal of 23143456 is 65434132.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (23143459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51436 + ... + 51883.

It is an arithmetic number, because the mean of its divisors is an integer number (2169720).

Almost surely, 2^23143456 is an apocalyptic number.

It is an amenable number.

23143456 is an abundant number, since it is smaller than the sum of its proper divisors (28929824).

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

23143456 is a wasteful number, since it uses less digits than its factorization.

23143456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103336 (or 103328 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 23143456 is about 4810.7645961947. The cubic root of 23143456 is about 284.9767335064.

Adding to 23143456 its reverse (65434132), we get a palindrome (88577588).

The spelling of 23143456 in words is "twenty-three million, one hundred forty-three thousand, four hundred fifty-six".