27820026264 has 16 divisors (see below), whose sum is σ = 69550065720. Its totient is φ = 9273342080.

The previous prime is 27820026259. The next prime is 27820026277. The reversal of 27820026264 is 46262002872.

It is a super-2 number, since 2×27820026264² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 579583857 + ... + 579583904.

Almost surely, 2^27820026264 is an apocalyptic number.

27820026264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27820026264 is an abundant number, since it is smaller than the sum of its proper divisors (41730039456).

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

27820026264 is a wasteful number, since it uses less digits than its factorization.

27820026264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159167770 (or 1159167766 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 27820026264 in words is "twenty-seven billion, eight hundred twenty million, twenty-six thousand, two hundred sixty-four".