228019837 has 16 divisors (see below), whose sum is σ = 243388800. Its totient is φ = 213263680.

The previous prime is 228019829. The next prime is 228019853. The reversal of 228019837 is 738910822.

It is not a de Polignac number, because 228019837 - 2³ = 228019829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228019837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228019867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120543 + ... + 122419.

It is an arithmetic number, because the mean of its divisors is an integer number (15211800).

Almost surely, 2^228019837 is an apocalyptic number.

It is an amenable number.

228019837 is a deficient number, since it is larger than the sum of its proper divisors (15368963).

228019837 is a wasteful number, since it uses less digits than its factorization.

228019837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 228019837 is about 15100.3257249637. The cubic root of 228019837 is about 610.9291912411.

The spelling of 228019837 in words is "two hundred twenty-eight million, nineteen thousand, eight hundred thirty-seven".