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2108818892 = 221927747617
BaseRepresentation
bin111110110110010…
…0000010111001100
312102222010002200102
41331230200113030
513304324201032
6545131150232
7103154444015
oct17554402714
95388102612
102108818892
11992411934
124aa2a5378
13277b87c3b
1416010400c
15c520a362
hex7db205cc

2108818892 has 12 divisors (see below), whose sum is σ = 3884666520. Its totient is φ = 998914176.

The previous prime is 2108818879. The next prime is 2108818973. The reversal of 2108818892 is 2988188012.

It is a super-2 number, since 2×21088188922 = 8894234238512215328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13873733 + ... + 13873884.

It is an arithmetic number, because the mean of its divisors is an integer number (323722210).

Almost surely, 22108818892 is an apocalyptic number.

It is an amenable number.

2108818892 is a deficient number, since it is larger than the sum of its proper divisors (1775847628).

2108818892 is a wasteful number, since it uses less digits than its factorization.

2108818892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27747640 (or 27747638 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 47.

The square root of 2108818892 is about 45921.8781410343. The cubic root of 2108818892 is about 1282.3692471325.

The spelling of 2108818892 in words is "two billion, one hundred eight million, eight hundred eighteen thousand, eight hundred ninety-two".

Divisors: 1 2 4 19 38 76 27747617 55495234 110990468 527204723 1054409446 2108818892