27903134720 has 264 divisors, whose sum is σ = 71127223632. Its totient is φ = 10498375680.

The previous prime is 27903134683. The next prime is 27903134729. The reversal of 27903134720 is 2743130972.

It is not an unprimeable number, because it can be changed into a prime (27903134729) 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 23 ways as a sum of consecutive naturals, for example, 260776907 + ... + 260777013.

Almost surely, 2^27903134720 is an apocalyptic number.

27903134720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27903134720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35563611816).

27903134720 is an abundant number, since it is smaller than the sum of its proper divisors (43224088912).

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

27903134720 is a wasteful number, since it uses less digits than its factorization.

27903134720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 27903134720 in words is "twenty-seven billion, nine hundred three million, one hundred thirty-four thousand, seven hundred twenty".