228915819 has 48 divisors (see below), whose sum is σ = 383011200. Its totient is φ = 130291200.

The previous prime is 228915779. The next prime is 228915823. The reversal of 228915819 is 918519822.

It is not a de Polignac number, because 228915819 - 2⁷ = 228915691 is a prime.

It is a super-2 number, since 2×228915819² = 104804904376881522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228915019) 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 47 ways as a sum of consecutive naturals, for example, 245947 + ... + 246875.

It is an arithmetic number, because the mean of its divisors is an integer number (7979400).

Almost surely, 2^228915819 is an apocalyptic number.

228915819 is a deficient number, since it is larger than the sum of its proper divisors (154095381).

228915819 is a wasteful number, since it uses less digits than its factorization.

228915819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1093 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 228915819 is about 15129.9642762301. The cubic root of 228915819 is about 611.7283412416.

The spelling of 228915819 in words is "two hundred twenty-eight million, nine hundred fifteen thousand, eight hundred nineteen".