28052215475 has 24 divisors (see below), whose sum is σ = 36314454000. Its totient is φ = 21469069440.

The previous prime is 28052215459. The next prime is 28052215507. The reversal of 28052215475 is 57451225082.

It is not a de Polignac number, because 28052215475 - 2⁴ = 28052215459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98465 + ... + 256514.

It is an arithmetic number, because the mean of its divisors is an integer number (1513102250).

Almost surely, 2^28052215475 is an apocalyptic number.

28052215475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28052215475 is a deficient number, since it is larger than the sum of its proper divisors (8262238525).

28052215475 is a wasteful number, since it uses less digits than its factorization.

28052215475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355127 (or 355122 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 41.

The spelling of 28052215475 in words is "twenty-eight billion, fifty-two million, two hundred fifteen thousand, four hundred seventy-five".