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13074637 = 15186587
BaseRepresentation
bin110001111000…
…000011001101
3220121021000211
4301320003031
511321342022
61144122421
7216063322
oct61700315
926537024
1013074637
117420194
124466411
13292a194
141a44b49
151233e77
hexc780cd

13074637 has 4 divisors (see below), whose sum is σ = 13161376. Its totient is φ = 12987900.

The previous prime is 13074631. The next prime is 13074643. The reversal of 13074637 is 73647031.

13074637 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73647031 = 83898779.

It is an interprime number because it is at equal distance from previous prime (13074631) and next prime (13074643).

It is a cyclic number.

It is not a de Polignac number, because 13074637 - 23 = 13074629 is a prime.

It is a super-2 number, since 2×130746372 = 341892265363538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13074599 and 13074608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13074631) 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, 43143 + ... + 43444.

It is an arithmetic number, because the mean of its divisors is an integer number (3290344).

Almost surely, 213074637 is an apocalyptic number.

It is an amenable number.

13074637 is a deficient number, since it is larger than the sum of its proper divisors (86739).

13074637 is an equidigital number, since it uses as much as digits as its factorization.

13074637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86738.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 13074637 is about 3615.8867515452. The cubic root of 13074637 is about 235.5826015268.

The spelling of 13074637 in words is "thirteen million, seventy-four thousand, six hundred thirty-seven".

Divisors: 1 151 86587 13074637