228398 has 4 divisors (see below), whose sum is σ = 342600. Its totient is φ = 114198.

The previous prime is 228383. The next prime is 228409. The reversal of 228398 is 893822.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 893822 = 2 ⋅446911.

It is a congruent number.

It is an unprimeable number.

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, 57098 + ... + 57101.

It is an arithmetic number, because the mean of its divisors is an integer number (85650).

2²²⁸³⁹⁸ is an apocalyptic number.

228398 is a deficient number, since it is larger than the sum of its proper divisors (114202).

228398 is a wasteful number, since it uses less digits than its factorization.

228398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114201.

The product of its digits is 6912, while the sum is 32.

The square root of 228398 is about 477.9100333745. The cubic root of 228398 is about 61.1266739672.

It can be divided in two parts, 228 and 398, that added together give a palindrome (626).

The spelling of 228398 in words is "two hundred twenty-eight thousand, three hundred ninety-eight".