28953215795 has 24 divisors (see below), whose sum is σ = 41402104128. Its totient is φ = 19369392000.

The previous prime is 28953215791. The next prime is 28953215861. The reversal of 28953215795 is 59751235982.

It is a happy number.

It is not a de Polignac number, because 28953215795 - 2² = 28953215791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28953215795.

It is not an unprimeable number, because it can be changed into a prime (28953215791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1431131 + ... + 1451220.

It is an arithmetic number, because the mean of its divisors is an integer number (1725087672).

Almost surely, 2^28953215795 is an apocalyptic number.

28953215795 is a deficient number, since it is larger than the sum of its proper divisors (12448888333).

28953215795 is a wasteful number, since it uses less digits than its factorization.

28953215795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882411 (or 2882404 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 56.

The spelling of 28953215795 in words is "twenty-eight billion, nine hundred fifty-three million, two hundred fifteen thousand, seven hundred ninety-five".