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13386961 = 71912423
BaseRepresentation
bin110011000100…
…010011010001
3221012010110101
4303010103101
511411340321
61154532401
7221534020
oct63042321
927163411
1013386961
117613905
124597101
132a093a3
141ac68b7
151296791
hexcc44d1

13386961 has 4 divisors (see below), whose sum is σ = 15299392. Its totient is φ = 11474532.

The previous prime is 13386953. The next prime is 13386983. The reversal of 13386961 is 16968331.

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: 16968331 = 79214789.

It is a cyclic number.

It is not a de Polignac number, because 13386961 - 23 = 13386953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13386961.

It is not an unprimeable number, because it can be changed into a prime (13386911) 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, 956205 + ... + 956218.

It is an arithmetic number, because the mean of its divisors is an integer number (3824848).

Almost surely, 213386961 is an apocalyptic number.

It is an amenable number.

13386961 is a deficient number, since it is larger than the sum of its proper divisors (1912431).

13386961 is an equidigital number, since it uses as much as digits as its factorization.

13386961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912430.

The product of its digits is 23328, while the sum is 37.

The square root of 13386961 is about 3658.8196184015. The cubic root of 13386961 is about 237.4437081732.

The spelling of 13386961 in words is "thirteen million, three hundred eighty-six thousand, nine hundred sixty-one".

Divisors: 1 7 1912423 13386961