228788536 has 16 divisors (see below), whose sum is σ = 429683040. Its totient is φ = 114206400.

The previous prime is 228788531. The next prime is 228788561. The reversal of 228788536 is 635887822.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 228788536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228788531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18240 + ... + 28111.

It is an arithmetic number, because the mean of its divisors is an integer number (26855190).

Almost surely, 2^228788536 is an apocalyptic number.

It is an amenable number.

228788536 is a deficient number, since it is larger than the sum of its proper divisors (200894504).

228788536 is a wasteful number, since it uses less digits than its factorization.

228788536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46974 (or 46970 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 228788536 is about 15125.7573694675. The cubic root of 228788536 is about 611.6149413982.

The spelling of 228788536 in words is "two hundred twenty-eight million, seven hundred eighty-eight thousand, five hundred thirty-six".