Search a number
-
+
13804851 = 34601617
BaseRepresentation
bin110100101010…
…010100110011
3221222100200210
4310222110303
512013223401
61211515203
7225224244
oct64522463
927870623
1013804851
117879875
124758b03
132b24668
141b94ccb
15132a4d6
hexd2a533

13804851 has 4 divisors (see below), whose sum is σ = 18406472. Its totient is φ = 9203232.

The previous prime is 13804831. The next prime is 13804859. The reversal of 13804851 is 15840831.

13804851 is digitally balanced in base 2 and base 4, because in such bases 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 an emirpimes, since its reverse is a distinct semiprime: 15840831 = 35280277.

It is not a de Polignac number, because 13804851 - 26 = 13804787 is a prime.

It is a super-3 number, since 3×138048513 (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13804859) 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, 2300806 + ... + 2300811.

It is an arithmetic number, because the mean of its divisors is an integer number (4601618).

Almost surely, 213804851 is an apocalyptic number.

13804851 is a deficient number, since it is larger than the sum of its proper divisors (4601621).

13804851 is an equidigital number, since it uses as much as digits as its factorization.

13804851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4601620.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 13804851 is about 3715.4879894840. The cubic root of 13804851 is about 239.8891328209.

The spelling of 13804851 in words is "thirteen million, eight hundred four thousand, eight hundred fifty-one".

Divisors: 1 3 4601617 13804851