228658715 has 4 divisors (see below), whose sum is σ = 274390464. Its totient is φ = 182926968.

The previous prime is 228658699. The next prime is 228658723. The reversal of 228658715 is 517856822.

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

It is a cyclic number.

It is not a de Polignac number, because 228658715 - 2⁴ = 228658699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22865867 + ... + 22865876.

It is an arithmetic number, because the mean of its divisors is an integer number (68597616).

Almost surely, 2^228658715 is an apocalyptic number.

228658715 is a deficient number, since it is larger than the sum of its proper divisors (45731749).

228658715 is an equidigital number, since it uses as much as digits as its factorization.

228658715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45731748.

The product of its digits is 268800, while the sum is 44.

The square root of 228658715 is about 15121.4653721126. The cubic root of 228658715 is about 611.4992370489.

The spelling of 228658715 in words is "two hundred twenty-eight million, six hundred fifty-eight thousand, seven hundred fifteen".