Search a number
-
+
13247960 = 2351130109
BaseRepresentation
bin110010100010…
…010111011000
3220221001210012
4302202113120
511342413320
61151541052
7220414535
oct62422730
926831705
1013247960
117529430
12452a788
13298b03b
141a8bd8c
15126a4c5
hexca25d8

13247960 has 32 divisors (see below), whose sum is σ = 32518800. Its totient is φ = 4817280.

The previous prime is 13247957. The next prime is 13247987. The reversal of 13247960 is 6974231.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14615 + ... + 15494.

Almost surely, 213247960 is an apocalyptic number.

13247960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13247960 is an abundant number, since it is smaller than the sum of its proper divisors (19270840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13247960 is a wasteful number, since it uses less digits than its factorization.

13247960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30131 (or 30127 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 13247960 is about 3639.7747183033. The cubic root of 13247960 is about 236.6190298444.

The spelling of 13247960 in words is "thirteen million, two hundred forty-seven thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 30109 60218 120436 150545 240872 301090 331199 602180 662398 1204360 1324796 1655995 2649592 3311990 6623980 13247960