228227819 has 4 divisors (see below), whose sum is σ = 228258096. Its totient is φ = 228197544.

The previous prime is 228227801. The next prime is 228227821. The reversal of 228227819 is 918722822.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228227819 is a prime.

It is a super-2 number, since 2×228227819² = 104175874730993522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228227899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6122 + ... + 22224.

It is an arithmetic number, because the mean of its divisors is an integer number (57064524).

Almost surely, 2^228227819 is an apocalyptic number.

228227819 is a deficient number, since it is larger than the sum of its proper divisors (30277).

228227819 is a wasteful number, since it uses less digits than its factorization.

228227819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30276.

The product of its digits is 64512, while the sum is 41.

The square root of 228227819 is about 15107.2108279457. The cubic root of 228227819 is about 611.1148821941.

The spelling of 228227819 in words is "two hundred twenty-eight million, two hundred twenty-seven thousand, eight hundred nineteen".