22853987 has 4 divisors (see below), whose sum is σ = 24612000. Its totient is φ = 21095976.

The previous prime is 22853983. The next prime is 22854047. The reversal of 22853987 is 78935822.

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 22853987 - 2² = 22853983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22853983) 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, 878987 + ... + 879012.

It is an arithmetic number, because the mean of its divisors is an integer number (6153000).

Almost surely, 2^22853987 is an apocalyptic number.

22853987 is a deficient number, since it is larger than the sum of its proper divisors (1758013).

22853987 is a wasteful number, since it uses less digits than its factorization.

22853987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758012.

The product of its digits is 241920, while the sum is 44.

The square root of 22853987 is about 4780.5843785044. The cubic root of 22853987 is about 283.7836206419.

The spelling of 22853987 in words is "twenty-two million, eight hundred fifty-three thousand, nine hundred eighty-seven".