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12807634 = 271989541
BaseRepresentation
bin110000110110…
…110111010010
3220002200202211
4300312313102
511234321014
61134302334
7213602020
oct60666722
926080684
1012807634
117258624
1243579aa
1328657a8
1419b5710
1511cecc4
hexc36dd2

12807634 has 32 divisors (see below), whose sum is σ = 23414400. Its totient is φ = 5132160.

The previous prime is 12807623. The next prime is 12807643. The reversal of 12807634 is 43670821.

It is a junction number, because it is equal to n+sod(n) for n = 12807596 and 12807605.

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, 23404 + ... + 23944.

It is an arithmetic number, because the mean of its divisors is an integer number (731700).

Almost surely, 212807634 is an apocalyptic number.

12807634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12807634 is a deficient number, since it is larger than the sum of its proper divisors (10606766).

12807634 is a wasteful number, since it uses less digits than its factorization.

12807634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 12807634 is about 3578.7754889068. The cubic root of 12807634 is about 233.9679138804.

The spelling of 12807634 in words is "twelve million, eight hundred seven thousand, six hundred thirty-four".

Divisors: 1 2 7 14 19 38 89 133 178 266 541 623 1082 1246 1691 3382 3787 7574 10279 11837 20558 23674 48149 71953 96298 143906 337043 674086 914831 1829662 6403817 12807634