228992 has 16 divisors (see below), whose sum is σ = 456450. Its totient is φ = 114432.

The previous prime is 228989. The next prime is 229003. The reversal of 228992 is 299822.

228992 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 141376 + 87616 = 376^2 + 296^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 228992.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767 + ... + 1022.

2²²⁸⁹⁹² is an apocalyptic number.

It is an amenable number.

228992 is a deficient number, since it is larger than the sum of its proper divisors (227458).

228992 is an equidigital number, since it uses as much as digits as its factorization.

228992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803 (or 1791 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 228992 is about 478.5310857196. The cubic root of 228992 is about 61.1796192833.

The spelling of 228992 in words is "two hundred twenty-eight thousand, nine hundred ninety-two".