228821144052 has 48 divisors (see below), whose sum is σ = 570405194240. Its totient is φ = 71180806752.

The previous prime is 228821144029. The next prime is 228821144077. The reversal of 228821144052 is 250441128822.

It is a happy number.

It is a super-2 number, since 2×228821144052² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228821144052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7474288 + ... + 7504839.

Almost surely, 2^228821144052 is an apocalyptic number.

It is an amenable number.

228821144052 is an abundant number, since it is smaller than the sum of its proper divisors (341584050188).

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

228821144052 is a wasteful number, since it uses less digits than its factorization.

228821144052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14979220 (or 14979218 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 39.

The spelling of 228821144052 in words is "two hundred twenty-eight billion, eight hundred twenty-one million, one hundred forty-four thousand, fifty-two".