228793815 has 20 divisors (see below), whose sum is σ = 410134824. Its totient is φ = 122023152.

The previous prime is 228793781. The next prime is 228793819. The reversal of 228793815 is 518397822.

It is a happy number.

It is not a de Polignac number, because 228793815 - 2⁶ = 228793751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228793819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 282057 + ... + 282866.

Almost surely, 2^228793815 is an apocalyptic number.

228793815 is a deficient number, since it is larger than the sum of its proper divisors (181341009).

228793815 is an equidigital number, since it uses as much as digits as its factorization.

228793815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564940 (or 564931 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 228793815 is about 15125.9318721195. The cubic root of 228793815 is about 611.6196454370.

The spelling of 228793815 in words is "two hundred twenty-eight million, seven hundred ninety-three thousand, eight hundred fifteen".