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12576081 = 371943733
BaseRepresentation
bin101111111110…
…010101010001
3212122221010210
4233332111101
511204413311
61125314333
7211615650
oct57762521
925587123
1012576081
11710a661
1242659a9
1327b428b
141955197
1511863a6
hexbfe551

12576081 has 32 divisors (see below), whose sum is σ = 20669440. Its totient is φ = 6640704.

The previous prime is 12576059. The next prime is 12576097. The reversal of 12576081 is 18067521.

It is not a de Polignac number, because 12576081 - 29 = 12575569 is a prime.

It is a super-2 number, since 2×125760812 = 316315626637122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12576001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16791 + ... + 17523.

It is an arithmetic number, because the mean of its divisors is an integer number (645920).

Almost surely, 212576081 is an apocalyptic number.

It is an amenable number.

12576081 is a deficient number, since it is larger than the sum of its proper divisors (8093359).

12576081 is a wasteful number, since it uses less digits than its factorization.

12576081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 12576081 is about 3546.2770619341. The cubic root of 12576081 is about 232.5493385869.

The spelling of 12576081 in words is "twelve million, five hundred seventy-six thousand, eighty-one".

Divisors: 1 3 7 19 21 43 57 129 133 301 399 733 817 903 2199 2451 5131 5719 13927 15393 17157 31519 41781 94557 97489 220633 292467 598861 661899 1796583 4192027 12576081