228497 has 4 divisors (see below), whose sum is σ = 241956. Its totient is φ = 215040.

The previous prime is 228479. The next prime is 228509. The reversal of 228497 is 794822.

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

It can be written as a sum of positive squares in 2 ways, for example, as 101761 + 126736 = 319^2 + 356^2 .

It is a cyclic number.

It is not a de Polignac number, because 228497 - 2¹⁰ = 227473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228427) 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, 6704 + ... + 6737.

It is an arithmetic number, because the mean of its divisors is an integer number (60489).

2²²⁸⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

228497 is a deficient number, since it is larger than the sum of its proper divisors (13459).

228497 is a wasteful number, since it uses less digits than its factorization.

228497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13458.

The product of its digits is 8064, while the sum is 32.

The square root of 228497 is about 478.0135981329. The cubic root of 228497 is about 61.1355045561.

The spelling of 228497 in words is "two hundred twenty-eight thousand, four hundred ninety-seven".