28175887048 has 16 divisors (see below), whose sum is σ = 54651505500. Its totient is φ = 13602152256.

The previous prime is 28175887031. The next prime is 28175887139. The reversal of 28175887048 is 84078857182.

It can be written as a sum of positive squares in 2 ways, for example, as 26757762084 + 1418124964 = 163578^2 + 37658^2 .

It is a super-2 number, since 2×28175887048² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a junction number, because it is equal to n+sod(n) for n = 28175886983 and 28175887001.

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 3 ways as a sum of consecutive naturals, for example, 60723663 + ... + 60724126.

Almost surely, 2^28175887048 is an apocalyptic number.

It is an amenable number.

28175887048 is a deficient number, since it is larger than the sum of its proper divisors (26475618452).

28175887048 is a wasteful number, since it uses less digits than its factorization.

28175887048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121447824 (or 121447820 counting only the distinct ones).

The product of its (nonzero) digits is 8028160, while the sum is 58.

The spelling of 28175887048 in words is "twenty-eight billion, one hundred seventy-five million, eight hundred eighty-seven thousand, forty-eight".