228088 has 16 divisors (see below), whose sum is σ = 488880. Its totient is φ = 97728.

The previous prime is 228077. The next prime is 228097. The reversal of 228088 is 880822.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

228088 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1981 + ... + 2092.

It is an arithmetic number, because the mean of its divisors is an integer number (30555).

2²²⁸⁰⁸⁸ is an apocalyptic number.

228088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

228088 is an abundant number, since it is smaller than the sum of its proper divisors (260792).

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

228088 is a wasteful number, since it uses less digits than its factorization.

228088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086 (or 4082 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 228088 is about 477.5855944226. The cubic root of 228088 is about 61.0990061117.

The spelling of 228088 in words is "two hundred twenty-eight thousand, eighty-eight".