228000891 has 16 divisors (see below), whose sum is σ = 308002464. Its totient is φ = 150011904.

The previous prime is 228000887. The next prime is 228000911. The reversal of 228000891 is 198000822.

It is not a de Polignac number, because 228000891 - 2² = 228000887 is a prime.

228000891 is a modest number, since divided by 891 gives 228 as remainder.

It is not an unprimeable number, because it can be changed into a prime (228000811) 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, 85815 + ... + 88431.

It is an arithmetic number, because the mean of its divisors is an integer number (19250154).

Almost surely, 2^228000891 is an apocalyptic number.

228000891 is a deficient number, since it is larger than the sum of its proper divisors (80001573).

228000891 is a wasteful number, since it uses less digits than its factorization.

228000891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 228000891 is about 15099.6983744709. The cubic root of 228000891 is about 610.9122702205.

The spelling of 228000891 in words is "two hundred twenty-eight million, eight hundred ninety-one", and thus it is an aban number.