27298256820 has 48 divisors (see below), whose sum is σ = 76443622080. Its totient is φ = 7278725376.

The previous prime is 27298256819. The next prime is 27298256833. The reversal of 27298256820 is 2865289272.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 681879 + ... + 720801.

It is an arithmetic number, because the mean of its divisors is an integer number (1592575460).

Almost surely, 2^27298256820 is an apocalyptic number.

27298256820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27298256820 is an abundant number, since it is smaller than the sum of its proper divisors (49145365260).

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

27298256820 is a wasteful number, since it uses less digits than its factorization.

27298256820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50624 (or 50622 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 27298256820 in words is "twenty-seven billion, two hundred ninety-eight million, two hundred fifty-six thousand, eight hundred twenty".