228784878 has 64 divisors (see below), whose sum is σ = 615237120. Its totient is φ = 61520256.

The previous prime is 228784877. The next prime is 228784921. The reversal of 228784878 is 878487822.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228784873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11376 + ... + 24227.

It is an arithmetic number, because the mean of its divisors is an integer number (9613080).

Almost surely, 2^228784878 is an apocalyptic number.

228784878 is an abundant number, since it is smaller than the sum of its proper divisors (386452242).

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

228784878 is a wasteful number, since it uses less digits than its factorization.

228784878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35638 (or 35632 counting only the distinct ones).

The product of its digits is 3211264, while the sum is 54.

The square root of 228784878 is about 15125.6364494192. The cubic root of 228784878 is about 611.6116817661.

The spelling of 228784878 in words is "two hundred twenty-eight million, seven hundred eighty-four thousand, eight hundred seventy-eight".