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3081611368 = 2311193495281
BaseRepresentation
bin1011011110101101…
…1010100001101000
321221202121002002101
42313223122201220
522302343030433
61225441343144
7136236156463
oct26753324150
97852532071
103081611368
111341542260
12720037ab4
133a158a1a4
142133ac2da
1513081507d
hexb7ada868

3081611368 has 64 divisors (see below), whose sum is σ = 6655320000. Its totient is φ = 1322956800.

The previous prime is 3081611363. The next prime is 3081611411. The reversal of 3081611368 is 8631161803.

It is not an unprimeable number, because it can be changed into a prime (3081611363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580888 + ... + 586168.

It is an arithmetic number, because the mean of its divisors is an integer number (103989375).

Almost surely, 23081611368 is an apocalyptic number.

3081611368 is a gapful number since it is divisible by the number (38) 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 3081611368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3327660000).

3081611368 is an abundant number, since it is smaller than the sum of its proper divisors (3573708632).

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

3081611368 is a wasteful number, since it uses less digits than its factorization.

3081611368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5666 (or 5662 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 3081611368 is about 55512.2632217423. The cubic root of 3081611368 is about 1455.2109562140.

The spelling of 3081611368 in words is "three billion, eighty-one million, six hundred eleven thousand, three hundred sixty-eight".

Divisors: 1 2 4 8 11 19 22 38 44 76 88 152 209 349 418 698 836 1396 1672 2792 3839 5281 6631 7678 10562 13262 15356 21124 26524 30712 42248 53048 58091 72941 100339 116182 145882 200678 232364 291764 401356 464728 583528 802712 1103729 1843069 2207458 3686138 4414916 7372276 8829832 14744552 20273759 35018311 40547518 70036622 81095036 140073244 162190072 280146488 385201421 770402842 1540805684 3081611368