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12875977 = 19677683
BaseRepresentation
bin110001000111…
…100011001001
3220020011112001
4301013203021
511244012402
61135551001
7214305202
oct61074311
926204461
1012875977
1172a4a04
12438b461
13288a92a
1419d25a9
1511e5187
hexc478c9

12875977 has 4 divisors (see below), whose sum is σ = 13553680. Its totient is φ = 12198276.

The previous prime is 12875969. The next prime is 12875981. The reversal of 12875977 is 77957821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77957821 = 591321319.

It is a cyclic number.

It is not a de Polignac number, because 12875977 - 23 = 12875969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12875917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338823 + ... + 338860.

It is an arithmetic number, because the mean of its divisors is an integer number (3388420).

Almost surely, 212875977 is an apocalyptic number.

It is an amenable number.

12875977 is a deficient number, since it is larger than the sum of its proper divisors (677703).

12875977 is an equidigital number, since it uses as much as digits as its factorization.

12875977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677702.

The product of its digits is 246960, while the sum is 46.

The square root of 12875977 is about 3588.3111626502. The cubic root of 12875977 is about 234.3833356917.

The spelling of 12875977 in words is "twelve million, eight hundred seventy-five thousand, nine hundred seventy-seven".

Divisors: 1 19 677683 12875977