28302703172 has 24 divisors (see below), whose sum is σ = 50123404800. Its totient is φ = 13982726240.

The previous prime is 28302703159. The next prime is 28302703211. The reversal of 28302703172 is 27130720382.

It is a happy number.

It is a super-3 number, since 3×28302703172³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10478 + ... + 238149.

It is an arithmetic number, because the mean of its divisors is an integer number (2088475200).

Almost surely, 2^28302703172 is an apocalyptic number.

It is an amenable number.

28302703172 is a deficient number, since it is larger than the sum of its proper divisors (21820701628).

28302703172 is a wasteful number, since it uses less digits than its factorization.

28302703172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248971 (or 248969 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 28302703172 in words is "twenty-eight billion, three hundred two million, seven hundred three thousand, one hundred seventy-two".