28985206266 has 32 divisors (see below), whose sum is σ = 64417918080. Its totient is φ = 9660783168.

The previous prime is 28985206253. The next prime is 28985206277. The reversal of 28985206266 is 66260258982.

28985206266 is a `hidden beast` number, since 2 + 8 + 9 + 8 + 5 + 2 + 0 + 626 + 6 = 666.

It is a super-3 number, since 3×28985206266³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 719490 + ... + 758706.

It is an arithmetic number, because the mean of its divisors is an integer number (2013059940).

Almost surely, 2^28985206266 is an apocalyptic number.

28985206266 is an abundant number, since it is smaller than the sum of its proper divisors (35432711814).

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

28985206266 is a wasteful number, since it uses less digits than its factorization.

28985206266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52915 (or 52909 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 28985206266 in words is "twenty-eight billion, nine hundred eighty-five million, two hundred six thousand, two hundred sixty-six".