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12661898 = 29676547
BaseRepresentation
bin110000010011…
…010010001010
3212211021212012
4300103102022
511220140043
61131215522
7212424104
oct60232212
925737765
1012661898
117169087
1242a75a2
132814362
141978574
1511a1a18
hexc1348a

12661898 has 8 divisors (see below), whose sum is σ = 19015392. Its totient is φ = 6323436.

The previous prime is 12661879. The next prime is 12661903. The reversal of 12661898 is 89816621.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340 + ... + 5207.

It is an arithmetic number, because the mean of its divisors is an integer number (2376924).

Almost surely, 212661898 is an apocalyptic number.

12661898 is a deficient number, since it is larger than the sum of its proper divisors (6353494).

12661898 is an equidigital number, since it uses as much as digits as its factorization.

12661898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7516.

The product of its digits is 41472, while the sum is 41.

The square root of 12661898 is about 3558.3560811139. The cubic root of 12661898 is about 233.0770987648.

The spelling of 12661898 in words is "twelve million, six hundred sixty-one thousand, eight hundred ninety-eight".

Divisors: 1 2 967 1934 6547 13094 6330949 12661898