228889020 has 48 divisors (see below), whose sum is σ = 678591648. Its totient is φ = 57446400.

The previous prime is 228888983. The next prime is 228889049. The reversal of 228889020 is 20988822.

228889020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 228889020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111181 + ... + 113220.

It is an arithmetic number, because the mean of its divisors is an integer number (14137326).

Almost surely, 2^228889020 is an apocalyptic number.

228889020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228889020 is an abundant number, since it is smaller than the sum of its proper divisors (449702628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228889020 is a wasteful number, since it uses less digits than its factorization.

228889020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224430 (or 224428 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 228889020 is about 15129.0786236307. The cubic root of 228889020 is about 611.7044687869.

The spelling of 228889020 in words is "two hundred twenty-eight million, eight hundred eighty-nine thousand, twenty".