23402451 has 4 divisors (see below), whose sum is σ = 31203272. Its totient is φ = 15601632.

The previous prime is 23402447. The next prime is 23402453. The reversal of 23402451 is 15420432.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23402451 - 2² = 23402447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23402453) 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, 3900406 + ... + 3900411.

It is an arithmetic number, because the mean of its divisors is an integer number (7800818).

Almost surely, 2^23402451 is an apocalyptic number.

23402451 is a deficient number, since it is larger than the sum of its proper divisors (7800821).

23402451 is an equidigital number, since it uses as much as digits as its factorization.

23402451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7800820.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 23402451 is about 4837.6079832909. The cubic root of 23402451 is about 286.0358367078.

Adding to 23402451 its reverse (15420432), we get a palindrome (38822883).

The spelling of 23402451 in words is "twenty-three million, four hundred two thousand, four hundred fifty-one".