28647068428 has 48 divisors (see below), whose sum is σ = 55125252000. Its totient is φ = 12917998080.

The previous prime is 28647068357. The next prime is 28647068431. The reversal of 28647068428 is 82486074682.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4894848 + ... + 4900696.

It is an arithmetic number, because the mean of its divisors is an integer number (1148442750).

Almost surely, 2^28647068428 is an apocalyptic number.

It is an amenable number.

28647068428 is a deficient number, since it is larger than the sum of its proper divisors (26478183572).

28647068428 is a wasteful number, since it uses less digits than its factorization.

28647068428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730 (or 6728 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 55.

The spelling of 28647068428 in words is "twenty-eight billion, six hundred forty-seven million, sixty-eight thousand, four hundred twenty-eight".