27420291340 has 48 divisors (see below), whose sum is σ = 64708233408. Its totient is φ = 9684221184.

The previous prime is 27420291289. The next prime is 27420291341. The reversal of 27420291340 is 4319202472.

It is a junction number, because it is equal to n+sod(n) for n = 27420291296 and 27420291305.

It is not an unprimeable number, because it can be changed into a prime (27420291341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2286687 + ... + 2298646.

It is an arithmetic number, because the mean of its divisors is an integer number (1348088196).

Almost surely, 2^27420291340 is an apocalyptic number.

27420291340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27420291340 is an abundant number, since it is smaller than the sum of its proper divisors (37287942068).

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

27420291340 is a wasteful number, since it uses less digits than its factorization.

27420291340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4585378 (or 4585376 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 27420291340 in words is "twenty-seven billion, four hundred twenty million, two hundred ninety-one thousand, three hundred forty".