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12692423 = 31409433
BaseRepresentation
bin110000011010…
…101111000111
3212212211201202
4300122233013
511222124143
61132013115
7212612102
oct60325707
925784652
1012692423
11718a007
12430119b
132825213
141985739
1511aaab8
hexc1abc7

12692423 has 4 divisors (see below), whose sum is σ = 13101888. Its totient is φ = 12282960.

The previous prime is 12692371. The next prime is 12692429. The reversal of 12692423 is 32429621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12692423 - 214 = 12676039 is a prime.

It is a super-2 number, since 2×126924232 = 322195203221858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12692429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204686 + ... + 204747.

It is an arithmetic number, because the mean of its divisors is an integer number (3275472).

Almost surely, 212692423 is an apocalyptic number.

12692423 is a deficient number, since it is larger than the sum of its proper divisors (409465).

12692423 is an equidigital number, since it uses as much as digits as its factorization.

12692423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409464.

The product of its digits is 5184, while the sum is 29.

The square root of 12692423 is about 3562.6426988964. The cubic root of 12692423 is about 233.2642473473.

The spelling of 12692423 in words is "twelve million, six hundred ninety-two thousand, four hundred twenty-three".

Divisors: 1 31 409433 12692423