228380472 has 80 divisors (see below), whose sum is σ = 660369600. Its totient is φ = 73664640.

The previous prime is 228380461. The next prime is 228380527. The reversal of 228380472 is 274083822.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14404 + ... + 25772.

It is an arithmetic number, because the mean of its divisors is an integer number (8254620).

Almost surely, 2^228380472 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 228380472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330184800).

228380472 is an abundant number, since it is smaller than the sum of its proper divisors (431989128).

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

228380472 is a wasteful number, since it uses less digits than its factorization.

228380472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11418 (or 11405 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 228380472 is about 15112.2623058230. The cubic root of 228380472 is about 611.2511024106.

The spelling of 228380472 in words is "two hundred twenty-eight million, three hundred eighty thousand, four hundred seventy-two".