228969 has 24 divisors (see below), whose sum is σ = 378560. Its totient is φ = 132192.

The previous prime is 228961. The next prime is 228983. The reversal of 228969 is 969822.

It is not a de Polignac number, because 228969 - 2³ = 228961 is a prime.

It is a super-2 number, since 2×228969² = 104853605922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2172 + ... + 2274.

2²²⁸⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

228969 is a deficient number, since it is larger than the sum of its proper divisors (149591).

228969 is a wasteful number, since it uses less digits than its factorization.

228969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 138 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 228969 is about 478.5070532396. The cubic root of 228969 is about 61.1775709172.

The spelling of 228969 in words is "two hundred twenty-eight thousand, nine hundred sixty-nine".