228419784 has 64 divisors (see below), whose sum is σ = 649281600. Its totient is φ = 74366208.

The previous prime is 228419783. The next prime is 228419791. The reversal of 228419784 is 487914822.

228419784 is a `hidden beast` number, since 228 + 419 + 7 + 8 + 4 = 666.

228419784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (228419783) 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, 3009 + ... + 21584.

It is an arithmetic number, because the mean of its divisors is an integer number (10145025).

Almost surely, 2^228419784 is an apocalyptic number.

228419784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228419784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324640800).

228419784 is an abundant number, since it is smaller than the sum of its proper divisors (420861816).

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

228419784 is a wasteful number, since it uses less digits than its factorization.

228419784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24651 (or 24641 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 228419784 is about 15113.5629154743. The cubic root of 228419784 is about 611.2861727248.

The spelling of 228419784 in words is "two hundred twenty-eight million, four hundred nineteen thousand, seven hundred eighty-four".