27927976440 has 128 divisors (see below), whose sum is σ = 103118722560. Its totient is φ = 5892493824.

The previous prime is 27927976429. The next prime is 27927976463. The reversal of 27927976440 is 4467972972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1267834 + ... + 1289673.

It is an arithmetic number, because the mean of its divisors is an integer number (805615020).

Almost surely, 2^27927976440 is an apocalyptic number.

27927976440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27927976440 is an abundant number, since it is smaller than the sum of its proper divisors (75190746120).

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

27927976440 is a wasteful number, since it uses less digits than its factorization.

27927976440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557541 (or 2557537 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 57.

The spelling of 27927976440 in words is "twenty-seven billion, nine hundred twenty-seven million, nine hundred seventy-six thousand, four hundred forty".