228511700 has 36 divisors (see below), whose sum is σ = 498405600. Its totient is φ = 90937440.

The previous prime is 228511663. The next prime is 228511733. The reversal of 228511700 is 7115822.

It is a self number, because there is not a number n which added to its sum of digits gives 228511700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14159 + ... + 25641.

It is an arithmetic number, because the mean of its divisors is an integer number (13844600).

Almost surely, 2^228511700 is an apocalyptic number.

228511700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228511700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249202800).

228511700 is an abundant number, since it is smaller than the sum of its proper divisors (269893900).

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

228511700 is a wasteful number, since it uses less digits than its factorization.

228511700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11696 (or 11689 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 228511700 is about 15116.6034544801. The cubic root of 228511700 is about 611.3681554731.

The spelling of 228511700 in words is "two hundred twenty-eight million, five hundred eleven thousand, seven hundred".