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12199019 = 72576781
BaseRepresentation
bin101110100010…
…010001101011
3211221202220112
4232202101223
511110332034
61113244535
7205455440
oct56422153
924852815
1012199019
116982338
12410374b
1326b1771
1418979c7
15110e7ce
hexba246b

12199019 has 8 divisors (see below), whose sum is σ = 13998048. Its totient is φ = 10414080.

The previous prime is 12199001. The next prime is 12199021. The reversal of 12199019 is 91099121.

12199019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12199019 is a prime.

It is a super-2 number, since 2×121990192 = 297632129124722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12199069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1592 + ... + 5189.

It is an arithmetic number, because the mean of its divisors is an integer number (1749756).

Almost surely, 212199019 is an apocalyptic number.

12199019 is a deficient number, since it is larger than the sum of its proper divisors (1799029).

12199019 is an equidigital number, since it uses as much as digits as its factorization.

12199019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7045.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 12199019 is about 3492.7094067500. The cubic root of 12199019 is about 230.2015813084.

The spelling of 12199019 in words is "twelve million, one hundred ninety-nine thousand, nineteen".

Divisors: 1 7 257 1799 6781 47467 1742717 12199019