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2115885112 = 231125793557
BaseRepresentation
bin111111000011101…
…1101100000111000
312110110102002201021
41332013131200320
513313131310422
6545542432224
7103301504155
oct17607354070
95413362637
102115885112
119963a8890
124b0732674
13279490333
1416102322c
15c5b53dc7
hex7e1dd838

2115885112 has 32 divisors (see below), whose sum is σ = 4344833520. Its totient is φ = 958013440.

The previous prime is 2115885103. The next prime is 2115885119.

It is a happy number.

2115885112 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115885119) 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 7 ways as a sum of consecutive naturals, for example, 24163 + ... + 69394.

Almost surely, 22115885112 is an apocalyptic number.

2115885112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2115885112 is an abundant number, since it is smaller than the sum of its proper divisors (2228948408).

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

2115885112 is a wasteful number, since it uses less digits than its factorization.

2115885112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93831 (or 93827 counting only the distinct ones).

The product of its digits is 6400, while the sum is 34.

The square root of 2115885112 is about 45998.7512004402. The cubic root of 2115885112 is about 1283.7999691629.

The spelling of 2115885112 in words is "two billion, one hundred fifteen million, eight hundred eighty-five thousand, one hundred twelve".

Divisors: 1 2 4 8 11 22 44 88 257 514 1028 2056 2827 5654 11308 22616 93557 187114 374228 748456 1029127 2058254 4116508 8233016 24044149 48088298 96176596 192353192 264485639 528971278 1057942556 2115885112