228851 has 4 divisors (see below), whose sum is σ = 261552. Its totient is φ = 196152.

The previous prime is 228847. The next prime is 228853. The reversal of 228851 is 158822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158822 = 2 ⋅79411.

It is a cyclic number.

It is not a de Polignac number, because 228851 - 2² = 228847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228851.

It is not an unprimeable number, because it can be changed into a prime (228853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16340 + ... + 16353.

It is an arithmetic number, because the mean of its divisors is an integer number (65388).

2²²⁸⁸⁵¹ is an apocalyptic number.

228851 is a deficient number, since it is larger than the sum of its proper divisors (32701).

228851 is an equidigital number, since it uses as much as digits as its factorization.

228851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32700.

The product of its digits is 1280, while the sum is 26.

The square root of 228851 is about 478.3837371818. The cubic root of 228851 is about 61.1670597508.

The spelling of 228851 in words is "two hundred twenty-eight thousand, eight hundred fifty-one".