228890 has 16 divisors (see below), whose sum is σ = 421632. Its totient is φ = 89424.

The previous prime is 228887. The next prime is 228901. The reversal of 228890 is 98822.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227 + ... + 713.

It is an arithmetic number, because the mean of its divisors is an integer number (26352).

2²²⁸⁸⁹⁰ is an apocalyptic number.

228890 is a deficient number, since it is larger than the sum of its proper divisors (192742).

228890 is a wasteful number, since it uses less digits than its factorization.

228890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 228890 is about 478.4244977005. The cubic root of 228890 is about 61.1705341800.

The spelling of 228890 in words is "two hundred twenty-eight thousand, eight hundred ninety".