228322878 has 32 divisors (see below), whose sum is σ = 530442240. Its totient is φ = 64164960.

The previous prime is 228322873. The next prime is 228322921. The reversal of 228322878 is 878223822.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228322873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41998 + ... + 47121.

It is an arithmetic number, because the mean of its divisors is an integer number (16576320).

Almost surely, 2^228322878 is an apocalyptic number.

228322878 is an abundant number, since it is smaller than the sum of its proper divisors (302119362).

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

228322878 is a wasteful number, since it uses less digits than its factorization.

228322878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89192.

The product of its digits is 172032, while the sum is 42.

The square root of 228322878 is about 15110.3566470153. The cubic root of 228322878 is about 611.1997154197.

The spelling of 228322878 in words is "two hundred twenty-eight million, three hundred twenty-two thousand, eight hundred seventy-eight".