228149972736 has 144 divisors (see below), whose sum is σ = 724128566784. Its totient is φ = 62351511552.

The previous prime is 228149972683. The next prime is 228149972773. The reversal of 228149972736 is 637279941822.

It is a self number, because there is not a number n which added to its sum of digits gives 228149972736.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 798931 + ... + 1046226.

Almost surely, 2^228149972736 is an apocalyptic number.

It is an amenable number.

228149972736 is an abundant number, since it is smaller than the sum of its proper divisors (495978594048).

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

228149972736 is a wasteful number, since it uses less digits than its factorization.

228149972736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845206 (or 1845192 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 60.

The spelling of 228149972736 in words is "two hundred twenty-eight billion, one hundred forty-nine million, nine hundred seventy-two thousand, seven hundred thirty-six".