Search a number
-
+
13968233 = 44331531
BaseRepresentation
bin110101010010…
…001101101001
3222021122210222
4311102031221
512033440413
61215215425
7226504466
oct65221551
928248728
1013968233
1179805a4
124817575
132b80b36
141bd866d
15135db08
hexd52369

13968233 has 4 divisors (see below), whose sum is σ = 14000208. Its totient is φ = 13936260.

The previous prime is 13968223. The next prime is 13968239. The reversal of 13968233 is 33286931.

13968233 is digitally balanced in base 2, 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: 33286931 = 53036277.

It is a cyclic number.

It is not a de Polignac number, because 13968233 - 24 = 13968217 is a prime.

It is a super-2 number, since 2×139682332 = 390223066284578, 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 = 13968193 and 13968202.

It is not an unprimeable number, because it can be changed into a prime (13968239) 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, 15323 + ... + 16208.

It is an arithmetic number, because the mean of its divisors is an integer number (3500052).

Almost surely, 213968233 is an apocalyptic number.

It is an amenable number.

13968233 is a deficient number, since it is larger than the sum of its proper divisors (31975).

13968233 is an equidigital number, since it uses as much as digits as its factorization.

13968233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31974.

The product of its digits is 23328, while the sum is 35.

The square root of 13968233 is about 3737.4099320251. The cubic root of 13968233 is about 240.8317955333.

The spelling of 13968233 in words is "thirteen million, nine hundred sixty-eight thousand, two hundred thirty-three".

Divisors: 1 443 31531 13968233