228784782 has 32 divisors (see below), whose sum is σ = 471072672. Its totient is φ = 74041344.

The previous prime is 228784771. The next prime is 228784789. The reversal of 228784782 is 287487822.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228784789) 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, 27138 + ... + 34554.

It is an arithmetic number, because the mean of its divisors is an integer number (14721021).

Almost surely, 2^228784782 is an apocalyptic number.

228784782 is an abundant number, since it is smaller than the sum of its proper divisors (242287890).

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

228784782 is a wasteful number, since it uses less digits than its factorization.

228784782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7572.

The product of its digits is 802816, while the sum is 48.

The square root of 228784782 is about 15125.6332759987. The cubic root of 228784782 is about 611.6115962203.

The spelling of 228784782 in words is "two hundred twenty-eight million, seven hundred eighty-four thousand, seven hundred eighty-two".