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6981001896 = 2331131783417
BaseRepresentation
bin1101000000001100…
…11010001010101000
3200000111222122021210
412200012122022220
5103244114030041
63112415033120
7334665352131
oct64006321250
920014878253
106981001896
112a62659060
121429b0b7a0
138733b386b
144a3212c88
152acd15016
hex1a019a2a8

6981001896 has 64 divisors (see below), whose sum is σ = 19099385280. Its totient is φ = 2108756480.

The previous prime is 6981001871. The next prime is 6981001949.

6981001896 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41980 + ... + 125396.

It is an arithmetic number, because the mean of its divisors is an integer number (298427895).

Almost surely, 26981001896 is an apocalyptic number.

6981001896 is a gapful number since it is divisible by the number (66) 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 6981001896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9549692640).

6981001896 is an abundant number, since it is smaller than the sum of its proper divisors (12118383384).

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

6981001896 is a wasteful number, since it uses less digits than its factorization.

6981001896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83754 (or 83750 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 6981001896 is about 83552.3901273925. The cubic root of 6981001896 is about 1911.1990402556.

It can be divided in two parts, 698100 and 1896, that added together give a palindrome (699996).

The spelling of 6981001896 in words is "six billion, nine hundred eighty-one million, one thousand, eight hundred ninety-six".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 132 264 317 634 951 1268 1902 2536 3487 3804 6974 7608 10461 13948 20922 27896 41844 83417 83688 166834 250251 333668 500502 667336 917587 1001004 1835174 2002008 2752761 3670348 5505522 7340696 11011044 22022088 26443189 52886378 79329567 105772756 158659134 211545512 290875079 317318268 581750158 634636536 872625237 1163500316 1745250474 2327000632 3490500948 6981001896