228564023 has 4 divisors (see below), whose sum is σ = 235937088. Its totient is φ = 221190960.

The previous prime is 228563999. The next prime is 228564043. The reversal of 228564023 is 320465822.

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 228564023 - 2²⁰ = 227515447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228564043) 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, 3686486 + ... + 3686547.

It is an arithmetic number, because the mean of its divisors is an integer number (58984272).

Almost surely, 2^228564023 is an apocalyptic number.

228564023 is a deficient number, since it is larger than the sum of its proper divisors (7373065).

228564023 is an equidigital number, since it uses as much as digits as its factorization.

228564023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7373064.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 228564023 is about 15118.3340021313. The cubic root of 228564023 is about 611.4148141705.

The spelling of 228564023 in words is "two hundred twenty-eight million, five hundred sixty-four thousand, twenty-three".