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2115115112 = 2311171974413
BaseRepresentation
bin111111000010010…
…0001100001101000
312110101221222110202
41332010201201220
513312432140422
6545514131332
7103262116235
oct17604414150
95411858422
102115115112
11995a22320
124b0420b48
13279280a06
14160ca278c
15c5a50b92
hex7e121868

2115115112 has 64 divisors (see below), whose sum is σ = 4822027200. Its totient is φ = 857226240.

The previous prime is 2115115099. The next prime is 2115115133.

2115115112 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8783 + ... + 65630.

It is an arithmetic number, because the mean of its divisors is an integer number (75344175).

Almost surely, 22115115112 is an apocalyptic number.

2115115112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2115115112 is an abundant number, since it is smaller than the sum of its proper divisors (2706912088).

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

2115115112 is a wasteful number, since it uses less digits than its factorization.

2115115112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74466 (or 74462 counting only the distinct ones).

The product of its digits is 100, while the sum is 20.

The square root of 2115115112 is about 45990.3806463917. The cubic root of 2115115112 is about 1283.6442193842.

It can be divided in two parts, 21151 and 15112, that added together give a palindrome (36263).

The spelling of 2115115112 in words is "two billion, one hundred fifteen million, one hundred fifteen thousand, one hundred twelve".

Divisors: 1 2 4 8 11 17 19 22 34 38 44 68 76 88 136 152 187 209 323 374 418 646 748 836 1292 1496 1672 2584 3553 7106 14212 28424 74413 148826 297652 595304 818543 1265021 1413847 1637086 2530042 2827694 3274172 5060084 5655388 6548344 10120168 11310776 13915231 15552317 24035399 27830462 31104634 48070798 55660924 62209268 96141596 111321848 124418536 192283192 264389389 528778778 1057557556 2115115112