228166887 has 16 divisors (see below), whose sum is σ = 328204800. Its totient is φ = 140161632.

The previous prime is 228166871. The next prime is 228166909. The reversal of 228166887 is 788661822.

It is not a de Polignac number, because 228166887 - 2⁴ = 228166871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228166487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18478 + ... + 28244.

It is an arithmetic number, because the mean of its divisors is an integer number (20512800).

Almost surely, 2^228166887 is an apocalyptic number.

228166887 is a deficient number, since it is larger than the sum of its proper divisors (100037913).

228166887 is a wasteful number, since it uses less digits than its factorization.

228166887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10382.

The product of its digits is 516096, while the sum is 48.

The square root of 228166887 is about 15105.1940404617. The cubic root of 228166887 is about 611.0604924379.

The spelling of 228166887 in words is "two hundred twenty-eight million, one hundred sixty-six thousand, eight hundred eighty-seven".