27986313240 has 160 divisors (see below), whose sum is σ = 99598546080. Its totient is φ = 7024002048.

The previous prime is 27986313239. The next prime is 27986313253. The reversal of 27986313240 is 4231368972.

27986313240 is a `hidden beast` number, since 2 + 7 + 9 + 8 + 631 + 3 + 2 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 198972 + ... + 309131.

It is an arithmetic number, because the mean of its divisors is an integer number (622490913).

Almost surely, 2^27986313240 is an apocalyptic number.

27986313240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27986313240 is an abundant number, since it is smaller than the sum of its proper divisors (71612232840).

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

27986313240 is a wasteful number, since it uses less digits than its factorization.

27986313240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508143 (or 508130 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 27986313240 in words is "twenty-seven billion, nine hundred eighty-six million, three hundred thirteen thousand, two hundred forty".