27020394720 has 288 divisors, whose sum is σ = 104316750720. Its totient is φ = 6550295040.

The previous prime is 27020394683. The next prime is 27020394803. The reversal of 27020394720 is 2749302072.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 396091 + ... + 459269.

It is an arithmetic number, because the mean of its divisors is an integer number (362210940).

Almost surely, 2^27020394720 is an apocalyptic number.

27020394720 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 27020394720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52158375360).

27020394720 is an abundant number, since it is smaller than the sum of its proper divisors (77296356000).

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

27020394720 is a wasteful number, since it uses less digits than its factorization.

27020394720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63220 (or 63200 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

Adding to 27020394720 its reverse (2749302072), we get a palindrome (29769696792).

The spelling of 27020394720 in words is "twenty-seven billion, twenty million, three hundred ninety-four thousand, seven hundred twenty".