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12784232086 = 247758917921
BaseRepresentation
bin10111110011111111…
…11110011010010110
31012222221210021112021
423321333332122112
5202140230411321
65512322243354
7631543115443
oct137177763226
935887707467
1012784232086
11547040286a
1225894b655a
131289786692
14893c409ca
154ec530941
hex2f9ffe696

12784232086 has 16 divisors (see below), whose sum is σ = 19588029120. Its totient is φ = 6254940160.

The previous prime is 12784232077. The next prime is 12784232107. The reversal of 12784232086 is 68023248721.

It is a super-2 number, since 2×127842320862 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704406 + ... + 722326.

It is an arithmetic number, because the mean of its divisors is an integer number (1224251820).

Almost surely, 212784232086 is an apocalyptic number.

12784232086 is a deficient number, since it is larger than the sum of its proper divisors (6803797034).

12784232086 is a wasteful number, since it uses less digits than its factorization.

12784232086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25559.

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 12784232086 in words is "twelve billion, seven hundred eighty-four million, two hundred thirty-two thousand, eighty-six".

Divisors: 1 2 47 94 7589 15178 17921 35842 356683 713366 842287 1684574 136002469 272004938 6392116043 12784232086