Search a number
-
+
27308324680 = 23571321783409
BaseRepresentation
bin11001011011101100…
…111111011101001000
32121111011102121222121
4121123230333131020
5421411412342210
620313440101024
71654503633640
oct313354773510
977434377877
1027308324680
111064392357a
125361604774
132762834800
141470b81520
15a9c68a6da
hex65bb3f748

27308324680 has 384 divisors, whose sum is σ = 81680659200. Its totient is φ = 8016592896.

The previous prime is 27308324671. The next prime is 27308324707. The reversal of 27308324680 is 8642380372.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 66768316 + ... + 66768724.

It is an arithmetic number, because the mean of its divisors is an integer number (212710050).

Almost surely, 227308324680 is an apocalyptic number.

27308324680 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 27308324680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40840329600).

27308324680 is an abundant number, since it is smaller than the sum of its proper divisors (54372334520).

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

27308324680 is a wasteful number, since it uses less digits than its factorization.

27308324680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 27308324680 in words is "twenty-seven billion, three hundred eight million, three hundred twenty-four thousand, six hundred eighty".