20175281228 has 24 divisors (see below), whose sum is σ = 35637882000. Its totient is φ = 9993388608.

The previous prime is 20175281201. The next prime is 20175281263. The reversal of 20175281228 is 82218257102.

It is a junction number, because it is equal to n+sod(n) for n = 20175281191 and 20175281200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181226 + ... + 270542.

It is an arithmetic number, because the mean of its divisors is an integer number (1484911750).

Almost surely, 2^20175281228 is an apocalyptic number.

It is an amenable number.

20175281228 is a deficient number, since it is larger than the sum of its proper divisors (15462600772).

20175281228 is a wasteful number, since it uses less digits than its factorization.

20175281228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89849 (or 89847 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 38.

The spelling of 20175281228 in words is "twenty billion, one hundred seventy-five million, two hundred eighty-one thousand, two hundred twenty-eight".