28950265817 has 16 divisors (see below), whose sum is σ = 31771211904. Its totient is φ = 26161296000.

The previous prime is 28950265811. The next prime is 28950265847. The reversal of 28950265817 is 71856205982.

It is a cyclic number.

It is not a de Polignac number, because 28950265817 - 2¹² = 28950261721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28950265811) 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, 1290188 + ... + 1312434.

It is an arithmetic number, because the mean of its divisors is an integer number (1985700744).

Almost surely, 2^28950265817 is an apocalyptic number.

It is an amenable number.

28950265817 is a deficient number, since it is larger than the sum of its proper divisors (2820946087).

28950265817 is a wasteful number, since it uses less digits than its factorization.

28950265817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22960.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 28950265817 in words is "twenty-eight billion, nine hundred fifty million, two hundred sixty-five thousand, eight hundred seventeen".