28520140995 has 96 divisors (see below), whose sum is σ = 51757812288. Its totient is φ = 14515200000.

The previous prime is 28520140981. The next prime is 28520141003. The reversal of 28520140995 is 59904102582.

It is a happy number.

28520140995 is a `hidden beast` number, since 28 + 520 + 14 + 0 + 9 + 95 = 666.

It is not a de Polignac number, because 28520140995 - 2¹⁰ = 28520139971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28520140995.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23746395 + ... + 23747595.

It is an arithmetic number, because the mean of its divisors is an integer number (539143878).

Almost surely, 2^28520140995 is an apocalyptic number.

28520140995 is a deficient number, since it is larger than the sum of its proper divisors (23237671293).

28520140995 is a wasteful number, since it uses less digits than its factorization.

28520140995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525 (or 1522 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 28520140995 in words is "twenty-eight billion, five hundred twenty million, one hundred forty thousand, nine hundred ninety-five".