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12900801 = 34300267
BaseRepresentation
bin110001001101…
…100111000001
3220021102120110
4301031213001
511300311201
61140301533
7214440444
oct61154701
926242513
1012900801
117311621
1243a18a9
132899014
1419db65b
1511ec6d6
hexc4d9c1

12900801 has 4 divisors (see below), whose sum is σ = 17201072. Its totient is φ = 8600532.

The previous prime is 12900793. The next prime is 12900803. The reversal of 12900801 is 10800921.

12900801 is digitally balanced in base 3, because in such base 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: 10800921 = 33600307.

It is not a de Polignac number, because 12900801 - 23 = 12900793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12900803) 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, 2150131 + ... + 2150136.

It is an arithmetic number, because the mean of its divisors is an integer number (4300268).

Almost surely, 212900801 is an apocalyptic number.

It is an amenable number.

12900801 is a deficient number, since it is larger than the sum of its proper divisors (4300271).

12900801 is an equidigital number, since it uses as much as digits as its factorization.

12900801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300270.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 12900801 is about 3591.7685059035. The cubic root of 12900801 is about 234.5338639923.

The spelling of 12900801 in words is "twelve million, nine hundred thousand, eight hundred one".

Divisors: 1 3 4300267 12900801