23442887 has 4 divisors (see below), whose sum is σ = 25246200. Its totient is φ = 21639576.

The previous prime is 23442877. The next prime is 23442889. The reversal of 23442887 is 78824432.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23442887 - 2¹² = 23438791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23442887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23442889) 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, 901637 + ... + 901662.

It is an arithmetic number, because the mean of its divisors is an integer number (6311550).

Almost surely, 2^23442887 is an apocalyptic number.

23442887 is a deficient number, since it is larger than the sum of its proper divisors (1803313).

23442887 is a wasteful number, since it uses less digits than its factorization.

23442887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803312.

The product of its digits is 86016, while the sum is 38.

The square root of 23442887 is about 4841.7855177610. The cubic root of 23442887 is about 286.2004845609.

The spelling of 23442887 in words is "twenty-three million, four hundred forty-two thousand, eight hundred eighty-seven".