28947950516 has 12 divisors (see below), whose sum is σ = 50675177280. Its totient is φ = 14469328440.

The previous prime is 28947950513. The next prime is 28947950569. The reversal of 28947950516 is 61505974982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28947950513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147670 + ... + 1172621.

It is an arithmetic number, because the mean of its divisors is an integer number (4222931440).

Almost surely, 2^28947950516 is an apocalyptic number.

It is an amenable number.

28947950516 is a deficient number, since it is larger than the sum of its proper divisors (21727226764).

28947950516 is a wasteful number, since it uses less digits than its factorization.

28947950516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323414 (or 2323412 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 28947950516 in words is "twenty-eight billion, nine hundred forty-seven million, nine hundred fifty thousand, five hundred sixteen".