228864251 has 24 divisors (see below), whose sum is σ = 307529136. Its totient is φ = 167838720.

The previous prime is 228864247. The next prime is 228864263. The reversal of 228864251 is 152468822.

It is not a de Polignac number, because 228864251 - 2² = 228864247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228864241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3326 + ... + 21651.

It is an arithmetic number, because the mean of its divisors is an integer number (12813714).

Almost surely, 2^228864251 is an apocalyptic number.

228864251 is a deficient number, since it is larger than the sum of its proper divisors (78664885).

228864251 is a wasteful number, since it uses less digits than its factorization.

228864251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25019 (or 25012 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 228864251 is about 15128.2600123081. The cubic root of 228864251 is about 611.6824029919.

The spelling of 228864251 in words is "two hundred twenty-eight million, eight hundred sixty-four thousand, two hundred fifty-one".