228902 has 4 divisors (see below), whose sum is σ = 343356. Its totient is φ = 114450.

The previous prime is 228901. The next prime is 228911. The reversal of 228902 is 209822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209822 = 2 ⋅104911.

It is a super-2 number, since 2×228902² = 104792251208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228901) by changing a digit.

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 as a sum of consecutive naturals, namely, 57224 + ... + 57227.

It is an arithmetic number, because the mean of its divisors is an integer number (85839).

2²²⁸⁹⁰² is an apocalyptic number.

228902 is a deficient number, since it is larger than the sum of its proper divisors (114454).

228902 is a wasteful number, since it uses less digits than its factorization.

228902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114453.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 228902 is about 478.4370387000. The cubic root of 228902 is about 61.1716031558.

The spelling of 228902 in words is "two hundred twenty-eight thousand, nine hundred two".