228208023 has 10 divisors (see below), whose sum is σ = 340903464. Its totient is φ = 152138628.

The previous prime is 228208021. The next prime is 228208027. The reversal of 228208023 is 320802822.

It is not a de Polignac number, because 228208023 - 2¹ = 228208021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228208021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1408611 + ... + 1408772.

Almost surely, 2^228208023 is an apocalyptic number.

228208023 is a deficient number, since it is larger than the sum of its proper divisors (112695441).

228208023 is an equidigital number, since it uses as much as digits as its factorization.

228208023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817395 (or 2817386 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 228208023 is about 15106.5556299244. Note that the first 3 decimals coincide. The cubic root of 228208023 is about 611.0972127442.

The spelling of 228208023 in words is "two hundred twenty-eight million, two hundred eight thousand, twenty-three".