28365477172305 has 128 divisors (see below), whose sum is σ = 57847891132416. Its totient is φ = 11545755033600.

The previous prime is 28365477172283. The next prime is 28365477172433. The reversal of 28365477172305 is 50327177456382.

It is not a de Polignac number, because 28365477172305 - 2³⁰ = 28364403430481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11898945 + ... + 14082465.

It is an arithmetic number, because the mean of its divisors is an integer number (451936649472).

Almost surely, 2^{28365477172305} is an apocalyptic number.

It is an amenable number.

28365477172305 is an abundant number, since it is smaller than the sum of its proper divisors (29482413960111).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28365477172305 is a wasteful number, since it uses less digits than its factorization.

28365477172305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183887.

The product of its (nonzero) digits is 59270400, while the sum is 60.

The spelling of 28365477172305 in words is "twenty-eight trillion, three hundred sixty-five billion, four hundred seventy-seven million, one hundred seventy-two thousand, three hundred five".