28344211875 has 320 divisors, whose sum is σ = 64359398400. Its totient is φ = 12037248000.

The previous prime is 28344211853. The next prime is 28344211919. The reversal of 28344211875 is 57811244382.

28344211875 is a `hidden beast` number, since 28 + 3 + 442 + 1 + 187 + 5 = 666.

It is not a de Polignac number, because 28344211875 - 2⁷ = 28344211747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (430080) is a multiple of the sum of its prime divisors (280).

It is a self number, because there is not a number n which added to its sum of digits gives 28344211875.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 163839289 + ... + 163839461.

It is an arithmetic number, because the mean of its divisors is an integer number (201123120).

Almost surely, 2^28344211875 is an apocalyptic number.

28344211875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28344211875 is an abundant number, since it is smaller than the sum of its proper divisors (36015186525).

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

28344211875 is a wasteful number, since it uses less digits than its factorization.

28344211875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 280 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The spelling of 28344211875 in words is "twenty-eight billion, three hundred forty-four million, two hundred eleven thousand, eight hundred seventy-five".