Search a number
-
+
13830015 = 352340087
BaseRepresentation
bin110100110000…
…011101111111
3222000122012210
4310300131333
512020030030
61212231503
7225360513
oct64603577
928018183
1013830015
117896771
12476b593
132b32c54
141ba0143
151332bb0
hexd3077f

13830015 has 16 divisors (see below), whose sum is σ = 23090688. Its totient is φ = 7055136.

The previous prime is 13830007. The next prime is 13830049. The reversal of 13830015 is 51003831.

It is a happy number.

It is not a de Polignac number, because 13830015 - 23 = 13830007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13829973 and 13830000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19699 + ... + 20388.

It is an arithmetic number, because the mean of its divisors is an integer number (1443168).

Almost surely, 213830015 is an apocalyptic number.

13830015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13830015 is a deficient number, since it is larger than the sum of its proper divisors (9260673).

13830015 is a wasteful number, since it uses less digits than its factorization.

13830015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40118.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 13830015 is about 3718.8728130981. The cubic root of 13830015 is about 240.0348039804.

Adding to 13830015 its reverse (51003831), we get a palindrome (64833846).

The spelling of 13830015 in words is "thirteen million, eight hundred thirty thousand, fifteen".

Divisors: 1 3 5 15 23 69 115 345 40087 120261 200435 601305 922001 2766003 4610005 13830015