Search a number
-
+
13867693 = 71981099
BaseRepresentation
bin110100111001…
…101010101101
3222002112220021
4310321222231
512022231233
61213122141
7225605410
oct64715255
928075807
1013867693
117912004
124789351
132b47148
141badb77
15133de2d
hexd39aad

13867693 has 4 divisors (see below), whose sum is σ = 15848800. Its totient is φ = 11886588.

The previous prime is 13867687. The next prime is 13867697. The reversal of 13867693 is 39676831.

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: 39676831 = 43922717.

It is not a de Polignac number, because 13867693 - 25 = 13867661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13867697) 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, 990543 + ... + 990556.

It is an arithmetic number, because the mean of its divisors is an integer number (3962200).

Almost surely, 213867693 is an apocalyptic number.

It is an amenable number.

13867693 is a deficient number, since it is larger than the sum of its proper divisors (1981107).

13867693 is an equidigital number, since it uses as much as digits as its factorization.

13867693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981106.

The product of its digits is 163296, while the sum is 43.

The square root of 13867693 is about 3723.9351498113. The cubic root of 13867693 is about 240.2525870817.

The spelling of 13867693 in words is "thirteen million, eight hundred sixty-seven thousand, six hundred ninety-three".

Divisors: 1 7 1981099 13867693