228285815 has 8 divisors (see below), whose sum is σ = 279771840. Its totient is φ = 178742752.

The previous prime is 228285791. The next prime is 228285823. The reversal of 228285815 is 518582822.

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 228285815 - 2⁶ = 228285751 is a prime.

It is a super-2 number, since 2×228285815² = 104228826660428450, which contains 22 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485480 + ... + 485949.

It is an arithmetic number, because the mean of its divisors is an integer number (34971480).

Almost surely, 2^228285815 is an apocalyptic number.

228285815 is a deficient number, since it is larger than the sum of its proper divisors (51486025).

228285815 is an equidigital number, since it uses as much as digits as its factorization.

228285815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971481.

The product of its digits is 102400, while the sum is 41.

The square root of 228285815 is about 15109.1301867447. The cubic root of 228285815 is about 611.1666421959.

The spelling of 228285815 in words is "two hundred twenty-eight million, two hundred eighty-five thousand, eight hundred fifteen".