228828187 has 6 divisors (see below), whose sum is σ = 266187948. Its totient is φ = 196138404.

The previous prime is 228828181. The next prime is 228828217. The reversal of 228828187 is 781828822.

228828187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228828187 - 2³ = 228828179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228828181) 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, 2334933 + ... + 2335030.

It is an arithmetic number, because the mean of its divisors is an integer number (44364658).

Almost surely, 2^228828187 is an apocalyptic number.

228828187 is a deficient number, since it is larger than the sum of its proper divisors (37359761).

228828187 is an equidigital number, since it uses as much as digits as its factorization.

228828187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4669977 (or 4669970 counting only the distinct ones).

The product of its digits is 229376, while the sum is 46.

The square root of 228828187 is about 15127.0680239100. The cubic root of 228828187 is about 611.6502720484.

The spelling of 228828187 in words is "two hundred twenty-eight million, eight hundred twenty-eight thousand, one hundred eighty-seven".