228542 has 8 divisors (see below), whose sum is σ = 345000. Its totient is φ = 113544.

The previous prime is 228539. The next prime is 228559. The reversal of 228542 is 245822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×228542³ = 35811237233388264, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 209 + ... + 707.

It is an arithmetic number, because the mean of its divisors is an integer number (43125).

2²²⁸⁵⁴² is an apocalyptic number.

228542 is a deficient number, since it is larger than the sum of its proper divisors (116458).

228542 is a wasteful number, since it uses less digits than its factorization.

228542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730.

The product of its digits is 1280, while the sum is 23.

The square root of 228542 is about 478.0606656064. The cubic root of 228542 is about 61.1395176170.

The spelling of 228542 in words is "two hundred twenty-eight thousand, five hundred forty-two".