228045978 has 48 divisors (see below), whose sum is σ = 501935616. Its totient is φ = 74820480.

The previous prime is 228045967. The next prime is 228045991. The reversal of 228045978 is 879540822.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388201 + ... + 388787.

It is an arithmetic number, because the mean of its divisors is an integer number (10456992).

Almost surely, 2^228045978 is an apocalyptic number.

228045978 is an abundant number, since it is smaller than the sum of its proper divisors (273889638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228045978 is a wasteful number, since it uses less digits than its factorization.

228045978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 228045978 is about 15101.1912775119. The cubic root of 228045978 is about 610.9525367095.

It can be divided in two parts, 22804 and 5978, that added together give a palindrome (28782).

The spelling of 228045978 in words is "two hundred twenty-eight million, forty-five thousand, nine hundred seventy-eight".