228636888436 has 24 divisors (see below), whose sum is σ = 459461691360. Its totient is φ = 98456076000.

The previous prime is 228636888419. The next prime is 228636888437. The reversal of 228636888436 is 634888636822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228636888437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136743715 + ... + 136745386.

It is an arithmetic number, because the mean of its divisors is an integer number (19144237140).

Almost surely, 2^228636888436 is an apocalyptic number.

It is an amenable number.

228636888436 is an abundant number, since it is smaller than the sum of its proper divisors (230824802924).

228636888436 is a wasteful number, since it uses less digits than its factorization.

228636888436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273489135 (or 273489133 counting only the distinct ones).

The product of its digits is 127401984, while the sum is 64.

The spelling of 228636888436 in words is "two hundred twenty-eight billion, six hundred thirty-six million, eight hundred eighty-eight thousand, four hundred thirty-six".