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13892717 = 67720521
BaseRepresentation
bin110100111111…
…110001101101
3222010211020002
4310333301231
512024031332
61213434045
7226041356
oct64776155
928124202
1013892717
117929893
12479b925
132b55657
141bb8d2d
151346562
hexd3fc6d

13892717 has 4 divisors (see below), whose sum is σ = 13913916. Its totient is φ = 13871520.

The previous prime is 13892701. The next prime is 13892729. The reversal of 13892717 is 71729831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71729831 = 263272737.

It can be written as a sum of positive squares in 2 ways, for example, as 12187081 + 1705636 = 3491^2 + 1306^2 .

It is a cyclic number.

It is not a de Polignac number, because 13892717 - 24 = 13892701 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 (13892737) 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, 9584 + ... + 10937.

It is an arithmetic number, because the mean of its divisors is an integer number (3478479).

Almost surely, 213892717 is an apocalyptic number.

It is an amenable number.

13892717 is a deficient number, since it is larger than the sum of its proper divisors (21199).

13892717 is an equidigital number, since it uses as much as digits as its factorization.

13892717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21198.

The product of its digits is 21168, while the sum is 38.

The square root of 13892717 is about 3727.2935221149. The cubic root of 13892717 is about 240.3970107223.

The spelling of 13892717 in words is "thirteen million, eight hundred ninety-two thousand, seven hundred seventeen".

Divisors: 1 677 20521 13892717