28481369875 has 32 divisors (see below), whose sum is σ = 40866029568. Its totient is φ = 19413036000.

The previous prime is 28481369869. The next prime is 28481369879. The reversal of 28481369875 is 57896318482.

It is a de Polignac number, because none of the positive numbers 2^k-28481369875 is a prime.

It is a super-2 number, since 2×28481369875² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28481369879) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 48670 + ... + 243580.

It is an arithmetic number, because the mean of its divisors is an integer number (1277063424).

Almost surely, 2^28481369875 is an apocalyptic number.

28481369875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28481369875 is a deficient number, since it is larger than the sum of its proper divisors (12384659693).

28481369875 is a wasteful number, since it uses less digits than its factorization.

28481369875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195100 (or 195090 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 61.

The spelling of 28481369875 in words is "twenty-eight billion, four hundred eighty-one million, three hundred sixty-nine thousand, eight hundred seventy-five".