Search a number
-
+
12230291 = 891311049
BaseRepresentation
bin101110101001…
…111010010011
3212000100210202
4232221322103
511112332131
61114045415
7205645553
oct56517223
925010722
1012230291
1169a3887
12411986b
1326c2a78
1418a5163
151118bcb
hexba9e93

12230291 has 8 divisors (see below), whose sum is σ = 12474000. Its totient is φ = 11989120.

The previous prime is 12230233. The next prime is 12230353. The reversal of 12230291 is 19203221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12230291 - 210 = 12229267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12230221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11135 + ... + 12183.

It is an arithmetic number, because the mean of its divisors is an integer number (1559250).

Almost surely, 212230291 is an apocalyptic number.

12230291 is a deficient number, since it is larger than the sum of its proper divisors (243709).

12230291 is a wasteful number, since it uses less digits than its factorization.

12230291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12230291 is about 3497.1832951677. The cubic root of 12230291 is about 230.3981195493.

It can be divided in two parts, 12230 and 291, that added together give a palindrome (12521).

The spelling of 12230291 in words is "twelve million, two hundred thirty thousand, two hundred ninety-one".

Divisors: 1 89 131 1049 11659 93361 137419 12230291