228747 has 4 divisors (see below), whose sum is σ = 305000. Its totient is φ = 152496.

The previous prime is 228737. The next prime is 228751. The reversal of 228747 is 747822.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 228747 - 2⁴ = 228731 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228707) 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, 38122 + ... + 38127.

It is an arithmetic number, because the mean of its divisors is an integer number (76250).

2²²⁸⁷⁴⁷ is an apocalyptic number.

228747 is a deficient number, since it is larger than the sum of its proper divisors (76253).

228747 is an equidigital number, since it uses as much as digits as its factorization.

228747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76252.

The product of its digits is 6272, while the sum is 30.

The square root of 228747 is about 478.2750254822. The cubic root of 228747 is about 61.1577926758.

The spelling of 228747 in words is "two hundred twenty-eight thousand, seven hundred forty-seven".