228321651852 has 72 divisors (see below), whose sum is σ = 688589124720. Its totient is φ = 65234756160.

The previous prime is 228321651757. The next prime is 228321651871. The reversal of 228321651852 is 258156123822.

228321651852 is a `hidden beast` number, since 2 + 2 + 83 + 2 + 1 + 6 + 518 + 52 = 666.

It is a super-3 number, since 3×228321651852³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228321651798 and 228321651807.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21567049 + ... + 21577632.

Almost surely, 2^228321651852 is an apocalyptic number.

It is an amenable number.

228321651852 is an abundant number, since it is smaller than the sum of its proper divisors (460267472868).

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

228321651852 is a wasteful number, since it uses less digits than its factorization.

228321651852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43144708 (or 43144693 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The spelling of 228321651852 in words is "two hundred twenty-eight billion, three hundred twenty-one million, six hundred fifty-one thousand, eight hundred fifty-two".