28775053815 has 32 divisors (see below), whose sum is σ = 47665497600. Its totient is φ = 14805732480.

The previous prime is 28775053781. The next prime is 28775053817. The reversal of 28775053815 is 51835057782.

It is not a de Polignac number, because 28775053815 - 2⁷ = 28775053687 is a prime.

It is a super-2 number, since 2×28775053815² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28775053817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 535966 + ... + 587204.

It is an arithmetic number, because the mean of its divisors is an integer number (1489546800).

Almost surely, 2^28775053815 is an apocalyptic number.

28775053815 is a deficient number, since it is larger than the sum of its proper divisors (18890443785).

28775053815 is a wasteful number, since it uses less digits than its factorization.

28775053815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52567.

The product of its (nonzero) digits is 2352000, while the sum is 51.

The spelling of 28775053815 in words is "twenty-eight billion, seven hundred seventy-five million, fifty-three thousand, eight hundred fifteen".