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12899210 = 251289921
BaseRepresentation
bin110001001101…
…001110001010
3220021100101112
4301031032022
511300233320
61140250322
7214433012
oct61151612
926240345
1012899210
117310405
1243a09a2
13289838c
1419dac42
1511ebec5
hexc4d38a

12899210 has 8 divisors (see below), whose sum is σ = 23218596. Its totient is φ = 5159680.

The previous prime is 12899203. The next prime is 12899213. The reversal of 12899210 is 1299821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11095561 + 1803649 = 3331^2 + 1343^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12899213) 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, 644951 + ... + 644970.

Almost surely, 212899210 is an apocalyptic number.

12899210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12899210 is a deficient number, since it is larger than the sum of its proper divisors (10319386).

12899210 is a wasteful number, since it uses less digits than its factorization.

12899210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289928.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 12899210 is about 3591.5470204356. The cubic root of 12899210 is about 234.5242222469.

The spelling of 12899210 in words is "twelve million, eight hundred ninety-nine thousand, two hundred ten".

Divisors: 1 2 5 10 1289921 2579842 6449605 12899210