28101508146 has 32 divisors (see below), whose sum is σ = 65162920320. Its totient is φ = 8959900752.

The previous prime is 28101508111. The next prime is 28101508151. The reversal of 28101508146 is 64180510182.

28101508146 is a `hidden beast` number, since 2 + 8 + 1 + 0 + 1 + 508 + 146 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28101508146.

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, 11311765 + ... + 11314248.

It is an arithmetic number, because the mean of its divisors is an integer number (2036341260).

Almost surely, 2^28101508146 is an apocalyptic number.

28101508146 is an abundant number, since it is smaller than the sum of its proper divisors (37061412174).

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

28101508146 is a wasteful number, since it uses less digits than its factorization.

28101508146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22626047 (or 22626041 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The spelling of 28101508146 in words is "twenty-eight billion, one hundred one million, five hundred eight thousand, one hundred forty-six".