228615 has 8 divisors (see below), whose sum is σ = 365808. Its totient is φ = 121920.

The previous prime is 228611. The next prime is 228617. The reversal of 228615 is 516822.

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

It is not a de Polignac number, because 228615 - 2² = 228611 is a prime.

228615 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228611) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 7606 + ... + 7635.

It is an arithmetic number, because the mean of its divisors is an integer number (45726).

2²²⁸⁶¹⁵ is an apocalyptic number.

228615 is a deficient number, since it is larger than the sum of its proper divisors (137193).

228615 is a wasteful number, since it uses less digits than its factorization.

228615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15249.

The product of its digits is 960, while the sum is 24.

The square root of 228615 is about 478.1370096531. The cubic root of 228615 is about 61.1460265733.

The spelling of 228615 in words is "two hundred twenty-eight thousand, six hundred fifteen".