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12426823 = 12797849
BaseRepresentation
bin101111011001…
…111001000111
3212101100101201
4233121321013
511140124243
61122203331
7210424543
oct57317107
925340351
1012426823
117018502
1241b3547
132761366
141916a23
15115704d
hexbd9e47

12426823 has 4 divisors (see below), whose sum is σ = 12524800. Its totient is φ = 12328848.

The previous prime is 12426811. The next prime is 12426829. The reversal of 12426823 is 32862421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32862421 = 71462851.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12426823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12426791 and 12426800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12426829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48798 + ... + 49051.

It is an arithmetic number, because the mean of its divisors is an integer number (3131200).

Almost surely, 212426823 is an apocalyptic number.

12426823 is a deficient number, since it is larger than the sum of its proper divisors (97977).

12426823 is an equidigital number, since it uses as much as digits as its factorization.

12426823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97976.

The product of its digits is 4608, while the sum is 28.

The square root of 12426823 is about 3525.1699249823. The cubic root of 12426823 is about 231.6256783295.

The spelling of 12426823 in words is "twelve million, four hundred twenty-six thousand, eight hundred twenty-three".

Divisors: 1 127 97849 12426823