30553521228 has 72 divisors (see below), whose sum is σ = 80664489360. Its totient is φ = 9741271680.

The previous prime is 30553521227. The next prime is 30553521289. The reversal of 30553521228 is 82212535503.

30553521228 is a `hidden beast` number, since 30 + 55 + 352 + 1 + 228 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 30553521192 and 30553521201.

It is not an unprimeable number, because it can be changed into a prime (30553521223) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 115803 + ... + 272978.

It is an arithmetic number, because the mean of its divisors is an integer number (1120340130).

Almost surely, 2^30553521228 is an apocalyptic number.

It is an amenable number.

30553521228 is an abundant number, since it is smaller than the sum of its proper divisors (50110968132).

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

30553521228 is a wasteful number, since it uses less digits than its factorization.

30553521228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388887 (or 388882 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 30553521228 in words is "thirty billion, five hundred fifty-three million, five hundred twenty-one thousand, two hundred twenty-eight".