228961887 has 24 divisors (see below), whose sum is σ = 383499648. Its totient is φ = 118939920.

The previous prime is 228961879. The next prime is 228961903. The reversal of 228961887 is 788169822.

It is a happy number.

It is not a de Polignac number, because 228961887 - 2³ = 228961879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228961087) 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, 42513 + ... + 47594.

It is an arithmetic number, because the mean of its divisors is an integer number (15979152).

Almost surely, 2^228961887 is an apocalyptic number.

228961887 is a deficient number, since it is larger than the sum of its proper divisors (154537761).

228961887 is a wasteful number, since it uses less digits than its factorization.

228961887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90139 (or 90128 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 228961887 is about 15131.4866090546. The cubic root of 228961887 is about 611.7693740998.

The spelling of 228961887 in words is "two hundred twenty-eight million, nine hundred sixty-one thousand, eight hundred eighty-seven".