28536536172 has 24 divisors (see below), whose sum is σ = 69480262656. Its totient is φ = 9098605648.

The previous prime is 28536536167. The next prime is 28536536177. The reversal of 28536536172 is 27163563582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28536536167) and next prime (28536536177).

It is not an unprimeable number, because it can be changed into a prime (28536536177) 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 7 ways as a sum of consecutive naturals, for example, 51696348 + ... + 51696899.

It is an arithmetic number, because the mean of its divisors is an integer number (2895010944).

Almost surely, 2^28536536172 is an apocalyptic number.

It is an amenable number.

28536536172 is an abundant number, since it is smaller than the sum of its proper divisors (40943726484).

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

28536536172 is a wasteful number, since it uses less digits than its factorization.

28536536172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103393277 (or 103393275 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 48.

The spelling of 28536536172 in words is "twenty-eight billion, five hundred thirty-six million, five hundred thirty-six thousand, one hundred seventy-two".