228678444 has 96 divisors (see below), whose sum is σ = 617164800. Its totient is φ = 73146240.

The previous prime is 228678431. The next prime is 228678451. The reversal of 228678444 is 444876822.

228678444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×228678444² = 104587661500522272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228678444.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 558912 + ... + 559320.

It is an arithmetic number, because the mean of its divisors is an integer number (6428800).

Almost surely, 2^228678444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228678444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308582400).

228678444 is an abundant number, since it is smaller than the sum of its proper divisors (388486356).

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

228678444 is a wasteful number, since it uses less digits than its factorization.

228678444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 612 counting only the distinct ones).

The product of its digits is 688128, while the sum is 45.

The square root of 228678444 is about 15122.1177088396. The cubic root of 228678444 is about 611.5168235518.

The spelling of 228678444 in words is "two hundred twenty-eight million, six hundred seventy-eight thousand, four hundred forty-four".