28545615156 has 48 divisors (see below), whose sum is σ = 68252970240. Its totient is φ = 9280135680.

The previous prime is 28545615151. The next prime is 28545615157. The reversal of 28545615156 is 65151654582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28545615151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1925685 + ... + 1940451.

It is an arithmetic number, because the mean of its divisors is an integer number (1421936880).

Almost surely, 2^28545615156 is an apocalyptic number.

It is an amenable number.

28545615156 is an abundant number, since it is smaller than the sum of its proper divisors (39707355084).

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

28545615156 is a wasteful number, since it uses less digits than its factorization.

28545615156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18744 (or 18742 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 48.

The spelling of 28545615156 in words is "twenty-eight billion, five hundred forty-five million, six hundred fifteen thousand, one hundred fifty-six".