228023863 has 6 divisors (see below), whose sum is σ = 238369544. Its totient is φ = 218109276.

The previous prime is 228023843. The next prime is 228023869. The reversal of 228023863 is 368320822.

It is a de Polignac number, because none of the positive numbers 2^k-228023863 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 (228023869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214995 + ... + 216052.

Almost surely, 2^228023863 is an apocalyptic number.

228023863 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

228023863 is a deficient number, since it is larger than the sum of its proper divisors (10345681).

228023863 is an equidigital number, since it uses as much as digits as its factorization.

228023863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431093 (or 431070 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 228023863 is about 15100.4590327579. The cubic root of 228023863 is about 610.9327868149.

The spelling of 228023863 in words is "two hundred twenty-eight million, twenty-three thousand, eight hundred sixty-three".