228515 has 8 divisors (see below), whose sum is σ = 313440. Its totient is φ = 156672.

The previous prime is 228511. The next prime is 228517. The reversal of 228515 is 515822.

228515 = T₁₆₇ + T₁₆₈ + ... + T₁₈₁.

228515 = 10⁴ + 11⁴ + ... + 16⁴.

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

It is a cyclic number.

It is not a de Polignac number, because 228515 - 2² = 228511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228511) 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, 3230 + ... + 3299.

It is an arithmetic number, because the mean of its divisors is an integer number (39180).

2²²⁸⁵¹⁵ is an apocalyptic number.

228515 is a deficient number, since it is larger than the sum of its proper divisors (84925).

228515 is an equidigital number, since it uses as much as digits as its factorization.

228515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541.

The product of its digits is 800, while the sum is 23.

The square root of 228515 is about 478.0324256784. The cubic root of 228515 is about 61.1371098437.

The spelling of 228515 in words is "two hundred twenty-eight thousand, five hundred fifteen".