27298456784 has 20 divisors (see below), whose sum is σ = 54714580260. Its totient is φ = 13178565120.

The previous prime is 27298456781. The next prime is 27298456807. The reversal of 27298456784 is 48765489272.

It can be written as a sum of positive squares in 2 ways, for example, as 22809456784 + 4489000000 = 151028^2 + 67000^2 .

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27298456781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29415977 + ... + 29416904.

It is an arithmetic number, because the mean of its divisors is an integer number (2735729013).

Almost surely, 2^27298456784 is an apocalyptic number.

It is an amenable number.

27298456784 is an abundant number, since it is smaller than the sum of its proper divisors (27416123476).

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

27298456784 is a wasteful number, since it uses less digits than its factorization.

27298456784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58832918 (or 58832912 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 62.

The spelling of 27298456784 in words is "twenty-seven billion, two hundred ninety-eight million, four hundred fifty-six thousand, seven hundred eighty-four".