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2981000898 = 2321727572
BaseRepresentation
bin1011000110101110…
…0111011011000010
321200202021112110200
42301223213123002
522101114012043
61211445110030
7133605042501
oct26153473302
97622245420
102981000898
11129a774107
126b23b8316
13386791875
14203c9c838
15126a8e7d3
hexb1ae76c2

2981000898 has 54 divisors (see below), whose sum is σ = 6870191211. Its totient is φ = 933980544.

The previous prime is 2981000879. The next prime is 2981000903. The reversal of 2981000898 is 8980001892.

It can be written as a sum of positive squares in 5 ways, for example, as 2589079689 + 391921209 = 50883^2 + 19797^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=38607.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 3937536 + ... + 3938292.

Almost surely, 22981000898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2981000898

2981000898 is an abundant number, since it is smaller than the sum of its proper divisors (3889190313).

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

2981000898 is an equidigital number, since it uses as much as digits as its factorization.

2981000898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 2981000898 is about 54598.5430025381. The cubic root of 2981000898 is about 1439.1985152139.

The spelling of 2981000898 in words is "two billion, nine hundred eighty-one million, eight hundred ninety-eight", and thus it is an aban number.

Divisors: 1 2 3 6 9 17 18 34 51 102 153 289 306 578 757 867 1514 1734 2271 2601 4542 5202 6813 12869 13626 25738 38607 77214 115821 218773 231642 437546 573049 656319 1146098 1312638 1719147 1968957 3438294 3937914 5157441 9741833 10314882 19483666 29225499 58450998 87676497 165611161 175352994 331222322 496833483 993666966 1490500449 2981000898