28186271382 has 16 divisors (see below), whose sum is σ = 56582109360. Its totient is φ = 9360496032.

The previous prime is 28186271363. The next prime is 28186271383. The reversal of 28186271382 is 28317268182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28186271383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8730193 + ... + 8733420.

It is an arithmetic number, because the mean of its divisors is an integer number (3536381835).

Almost surely, 2^28186271382 is an apocalyptic number.

28186271382 is an abundant number, since it is smaller than the sum of its proper divisors (28395837978).

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

28186271382 is a wasteful number, since it uses less digits than its factorization.

28186271382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17463887.

The product of its digits is 516096, while the sum is 48.

The spelling of 28186271382 in words is "twenty-eight billion, one hundred eighty-six million, two hundred seventy-one thousand, three hundred eighty-two".