228693888 has 64 divisors (see below), whose sum is σ = 674974800. Its totient is φ = 76230144.

The previous prime is 228693841. The next prime is 228693901. The reversal of 228693888 is 888396822.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29631 + ... + 36542.

Almost surely, 2^228693888 is an apocalyptic number.

It is an amenable number.

228693888 is an abundant number, since it is smaller than the sum of its proper divisors (446280912).

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

228693888 is an equidigital number, since it uses as much as digits as its factorization.

228693888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66196 (or 66178 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 228693888 is about 15122.6283429832. The cubic root of 228693888 is about 611.5305896843.

The spelling of 228693888 in words is "two hundred twenty-eight million, six hundred ninety-three thousand, eight hundred eighty-eight".