Search a number
-
+
13190961 = 371394519
BaseRepresentation
bin110010010100…
…011100110001
3220211011121010
4302110130301
511334102321
61150421133
7220056420
oct62243461
926734533
1013190961
11749a623
1245017a9
13296b104
141a752b7
151258676
hexc94731

13190961 has 16 divisors (see below), whose sum is σ = 20249600. Its totient is φ = 7481808.

The previous prime is 13190951. The next prime is 13190977. The reversal of 13190961 is 16909131.

It is not a de Polignac number, because 13190961 - 26 = 13190897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13190951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660 + ... + 5178.

It is an arithmetic number, because the mean of its divisors is an integer number (1265600).

Almost surely, 213190961 is an apocalyptic number.

It is an amenable number.

13190961 is a deficient number, since it is larger than the sum of its proper divisors (7058639).

13190961 is a wasteful number, since it uses less digits than its factorization.

13190961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 13190961 is about 3631.9362604539. The cubic root of 13190961 is about 236.2791929436.

The spelling of 13190961 in words is "thirteen million, one hundred ninety thousand, nine hundred sixty-one".

Divisors: 1 3 7 21 139 417 973 2919 4519 13557 31633 94899 628141 1884423 4396987 13190961