Search a number
-
+
12190913 = 719711291
BaseRepresentation
bin101110100000…
…010011000001
3211221100210022
4232200103001
511110102123
61113143225
7205423010
oct56402301
924840708
1012190913
116977239
1240bab15
1326aab77
141894a77
15110c1c8
hexba04c1

12190913 has 16 divisors (see below), whose sum is σ = 14883840. Its totient is φ = 9752400.

The previous prime is 12190909. The next prime is 12190931. The reversal of 12190913 is 31909121.

It is not a de Polignac number, because 12190913 - 22 = 12190909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12190903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8798 + ... + 10088.

It is an arithmetic number, because the mean of its divisors is an integer number (930240).

Almost surely, 212190913 is an apocalyptic number.

It is an amenable number.

12190913 is a deficient number, since it is larger than the sum of its proper divisors (2692927).

12190913 is a wasteful number, since it uses less digits than its factorization.

12190913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 12190913 is about 3491.5487967376. The cubic root of 12190913 is about 230.1505819212.

The spelling of 12190913 in words is "twelve million, one hundred ninety thousand, nine hundred thirteen".

Divisors: 1 7 19 71 133 497 1291 1349 9037 9443 24529 91661 171703 641627 1741559 12190913