228790 has 16 divisors (see below), whose sum is σ = 417312. Its totient is φ = 90304.

The previous prime is 228773. The next prime is 228793. The reversal of 228790 is 97822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1287 + ... + 1453.

It is an arithmetic number, because the mean of its divisors is an integer number (26082).

2²²⁸⁷⁹⁰ is an apocalyptic number.

228790 is a deficient number, since it is larger than the sum of its proper divisors (188522).

228790 is a wasteful number, since it uses less digits than its factorization.

228790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 228790 is about 478.3199765847. The cubic root of 228790 is about 61.1616245954.

The spelling of 228790 in words is "two hundred twenty-eight thousand, seven hundred ninety".