Search a number
-
+
13023245 = 54495801
BaseRepresentation
bin110001101011…
…100000001101
3220111122112102
4301223200031
511313220440
61143044445
7215460434
oct61534015
926448472
1013023245
117395614
124440725
13290c981
141a3011b
151223b15
hexc6b80d

13023245 has 8 divisors (see below), whose sum is σ = 15665400. Its totient is φ = 10393600.

The previous prime is 13023203. The next prime is 13023251. The reversal of 13023245 is 54232031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5466244 + 7557001 = 2338^2 + 2749^2 .

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

It is not a de Polignac number, because 13023245 - 26 = 13023181 is a prime.

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, 656 + ... + 5145.

It is an arithmetic number, because the mean of its divisors is an integer number (1958175).

Almost surely, 213023245 is an apocalyptic number.

It is an amenable number.

13023245 is a deficient number, since it is larger than the sum of its proper divisors (2642155).

13023245 is an equidigital number, since it uses as much as digits as its factorization.

13023245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6255.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 13023245 is about 3608.7733372990. The cubic root of 13023245 is about 235.2735309010.

Adding to 13023245 its reverse (54232031), we get a palindrome (67255276).

The spelling of 13023245 in words is "thirteen million, twenty-three thousand, two hundred forty-five".

Divisors: 1 5 449 2245 5801 29005 2604649 13023245