Search a number
-
+
12238486901 = 47832558747
BaseRepresentation
bin10110110010111100…
…00111110101110101
31011120220212112212122
423121132013311311
5200031023040101
65342225125325
7612165264554
oct133136076565
934526775778
1012238486901
115210341393
122456789845
1312006a5a34
1484157bd9b
154b967d51b
hex2d9787d75

12238486901 has 4 divisors (see below), whose sum is σ = 12241050432. Its totient is φ = 12235923372.

The previous prime is 12238486889. The next prime is 12238486919. The reversal of 12238486901 is 10968483221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10968483221 = 41267523981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12238486901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12238486501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274591 + ... + 1284156.

It is an arithmetic number, because the mean of its divisors is an integer number (3060262608).

Almost surely, 212238486901 is an apocalyptic number.

It is an amenable number.

12238486901 is a deficient number, since it is larger than the sum of its proper divisors (2563531).

12238486901 is an equidigital number, since it uses as much as digits as its factorization.

12238486901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563530.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 12238486901 in words is "twelve billion, two hundred thirty-eight million, four hundred eighty-six thousand, nine hundred one".

Divisors: 1 4783 2558747 12238486901