27438382740 has 24 divisors (see below), whose sum is σ = 76827471840. Its totient is φ = 7316902048.

The previous prime is 27438382723. The next prime is 27438382759. The reversal of 27438382740 is 4728383472.

It is a self number, because there is not a number n which added to its sum of digits gives 27438382740.

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 7 ways as a sum of consecutive naturals, for example, 228653130 + ... + 228653249.

It is an arithmetic number, because the mean of its divisors is an integer number (3201144660).

Almost surely, 2^27438382740 is an apocalyptic number.

27438382740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27438382740 is an abundant number, since it is smaller than the sum of its proper divisors (49389089100).

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

27438382740 is a wasteful number, since it uses less digits than its factorization.

27438382740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457306391 (or 457306389 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 48.

The spelling of 27438382740 in words is "twenty-seven billion, four hundred thirty-eight million, three hundred eighty-two thousand, seven hundred forty".