228488736 has 96 divisors (see below), whose sum is σ = 702269568. Its totient is φ = 63682560.

The previous prime is 228488731. The next prime is 228488747. The reversal of 228488736 is 637884822.

It is a happy number.

228488736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (228488731) 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, 23406 + ... + 31698.

It is an arithmetic number, because the mean of its divisors is an integer number (7315308).

Almost surely, 2^228488736 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 228488736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351134784).

228488736 is an abundant number, since it is smaller than the sum of its proper divisors (473780832).

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

228488736 is a wasteful number, since it uses less digits than its factorization.

228488736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8354 (or 8346 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 228488736 is about 15115.8438732345. The cubic root of 228488736 is about 611.3476752254.

The spelling of 228488736 in words is "two hundred twenty-eight million, four hundred eighty-eight thousand, seven hundred thirty-six".