23821089 has 8 divisors (see below), whose sum is σ = 32058720. Its totient is φ = 15732096.

The previous prime is 23821087. The next prime is 23821099. The reversal of 23821089 is 98012832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23821089 - 2¹ = 23821087 is a prime.

It is a super-2 number, since 2×23821089² = 1134888562291842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (23821087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36784 + ... + 37425.

It is an arithmetic number, because the mean of its divisors is an integer number (4007340).

Almost surely, 2^23821089 is an apocalyptic number.

It is an amenable number.

23821089 is a deficient number, since it is larger than the sum of its proper divisors (8237631).

23821089 is a wasteful number, since it uses less digits than its factorization.

23821089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74319.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 23821089 is about 4880.6853002422. The cubic root of 23821089 is about 287.7313636043.

The spelling of 23821089 in words is "twenty-three million, eight hundred twenty-one thousand, eighty-nine".