28156270347 has 12 divisors (see below), whose sum is σ = 41277186600. Its totient is φ = 18490684608.

The previous prime is 28156270333. The next prime is 28156270357. The reversal of 28156270347 is 74307265182.

28156270347 is a `hidden beast` number, since 2 + 8 + 15 + 627 + 0 + 3 + 4 + 7 = 666.

It is not a de Polignac number, because 28156270347 - 2⁸ = 28156270091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28156270327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23346222 + ... + 23347427.

It is an arithmetic number, because the mean of its divisors is an integer number (3439765550).

Almost surely, 2^28156270347 is an apocalyptic number.

28156270347 is a deficient number, since it is larger than the sum of its proper divisors (13120916253).

28156270347 is a wasteful number, since it uses less digits than its factorization.

28156270347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46693722 (or 46693719 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 28156270347 in words is "twenty-eight billion, one hundred fifty-six million, two hundred seventy thousand, three hundred forty-seven".