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12880797 = 34293599
BaseRepresentation
bin110001001000…
…101110011101
3220020102010120
4301020232131
511244141142
61140025153
7214325226
oct61105635
926212116
1012880797
1172a8596
1243921b9
13288cb97
1419d424d
1511e67ec
hexc48b9d

12880797 has 4 divisors (see below), whose sum is σ = 17174400. Its totient is φ = 8587196.

The previous prime is 12880793. The next prime is 12880811. The reversal of 12880797 is 79708821.

12880797 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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: 79708821 = 326569607.

It is a cyclic number.

It is not a de Polignac number, because 12880797 - 22 = 12880793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12880793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2146797 + ... + 2146802.

It is an arithmetic number, because the mean of its divisors is an integer number (4293600).

Almost surely, 212880797 is an apocalyptic number.

It is an amenable number.

12880797 is a deficient number, since it is larger than the sum of its proper divisors (4293603).

12880797 is an equidigital number, since it uses as much as digits as its factorization.

12880797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293602.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 12880797 is about 3588.9827249515. The cubic root of 12880797 is about 234.4125784368.

The spelling of 12880797 in words is "twelve million, eight hundred eighty thousand, seven hundred ninety-seven".

Divisors: 1 3 4293599 12880797