Search a number
-
+
11830853 = 21295557
BaseRepresentation
bin101101001000…
…011001000101
3211021001212202
4231020121011
511012041403
61101324245
7202363166
oct55103105
924231782
1011830853
116750771
123b66685
1325b3008
1417dd76d
15108a688
hexb48645

11830853 has 4 divisors (see below), whose sum is σ = 11838540. Its totient is φ = 11823168.

The previous prime is 11830843. The next prime is 11830873. The reversal of 11830853 is 35803811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35803811 = 73948449.

It can be written as a sum of positive squares in 2 ways, for example, as 7579009 + 4251844 = 2753^2 + 2062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-11830853 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 (11830813) 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, 650 + ... + 4907.

It is an arithmetic number, because the mean of its divisors is an integer number (2959635).

Almost surely, 211830853 is an apocalyptic number.

It is an amenable number.

11830853 is a deficient number, since it is larger than the sum of its proper divisors (7687).

11830853 is an equidigital number, since it uses as much as digits as its factorization.

11830853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7686.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 11830853 is about 3439.6007035701. The cubic root of 11830853 is about 227.8620600432.

The spelling of 11830853 in words is "eleven million, eight hundred thirty thousand, eight hundred fifty-three".

Divisors: 1 2129 5557 11830853