27826931540 has 24 divisors (see below), whose sum is σ = 58643057760. Its totient is φ = 11091439008.

The previous prime is 27826931497. The next prime is 27826931569. The reversal of 27826931540 is 4513962872.

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, 2452550 + ... + 2463869.

It is an arithmetic number, because the mean of its divisors is an integer number (2443460740).

It is a 1-persistent number, because it is pandigital, but 2⋅27826931540 = 55653863080 is not.

Almost surely, 2^27826931540 is an apocalyptic number.

27826931540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27826931540 is an abundant number, since it is smaller than the sum of its proper divisors (30816126220).

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

27826931540 is a wasteful number, since it uses less digits than its factorization.

27826931540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916711 (or 4916709 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 27826931540 in words is "twenty-seven billion, eight hundred twenty-six million, nine hundred thirty-one thousand, five hundred forty".