28429636548 has 48 divisors (see below), whose sum is σ = 68675362560. Its totient is φ = 9147849984.

The previous prime is 28429636541. The next prime is 28429636549. The reversal of 28429636548 is 84563692482.

It is a Smith number, since the sum of its digits (57) 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 (28429636541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304083 + ... + 386426.

It is an arithmetic number, because the mean of its divisors is an integer number (1430736720).

Almost surely, 2^28429636548 is an apocalyptic number.

It is an amenable number.

28429636548 is an abundant number, since it is smaller than the sum of its proper divisors (40245726012).

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

28429636548 is a wasteful number, since it uses less digits than its factorization.

28429636548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690636 (or 690634 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 57.

The spelling of 28429636548 in words is "twenty-eight billion, four hundred twenty-nine million, six hundred thirty-six thousand, five hundred forty-eight".