Search a number
-
+
13023145 = 517914551
BaseRepresentation
bin110001101011…
…011110101001
3220111122101201
4301223132221
511313220040
61143044201
7215460232
oct61533651
926448351
1013023145
117395533
124440661
13290c905
141a30089
151223a9a
hexc6b7a9

13023145 has 8 divisors (see below), whose sum is σ = 15716160. Its totient is φ = 10359600.

The previous prime is 13023133. The next prime is 13023167. The reversal of 13023145 is 54132031.

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

It is a de Polignac number, because none of the positive numbers 2k-13023145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6381 + ... + 8170.

It is an arithmetic number, because the mean of its divisors is an integer number (1964520).

Almost surely, 213023145 is an apocalyptic number.

It is an amenable number.

13023145 is a deficient number, since it is larger than the sum of its proper divisors (2693015).

13023145 is a wasteful number, since it uses less digits than its factorization.

13023145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14735.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13023145 is about 3608.7594821490. The cubic root of 13023145 is about 235.2729287108.

Adding to 13023145 its reverse (54132031), we get a palindrome (67155176).

The spelling of 13023145 in words is "thirteen million, twenty-three thousand, one hundred forty-five".

Divisors: 1 5 179 895 14551 72755 2604629 13023145