28915632175 has 12 divisors (see below), whose sum is σ = 36360391536. Its totient is φ = 22806694400.

The previous prime is 28915632167. The next prime is 28915632191. The reversal of 28915632175 is 57123651982.

It is not a de Polignac number, because 28915632175 - 2³ = 28915632167 is a prime.

It is a super-2 number, since 2×28915632175² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8143474 + ... + 8147023.

It is an arithmetic number, because the mean of its divisors is an integer number (3030032628).

Almost surely, 2^28915632175 is an apocalyptic number.

28915632175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28915632175 is a deficient number, since it is larger than the sum of its proper divisors (7444759361).

28915632175 is a wasteful number, since it uses less digits than its factorization.

28915632175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16290578 (or 16290573 counting only the distinct ones).

The product of its digits is 907200, while the sum is 49.

The spelling of 28915632175 in words is "twenty-eight billion, nine hundred fifteen million, six hundred thirty-two thousand, one hundred seventy-five".