Search a number
-
+
13149019 = 131138951
BaseRepresentation
bin110010001010…
…001101011011
3220202001001201
4302022031123
511331232034
61145455031
7216523222
oct62121533
926661051
1013149019
117471064
1244a1477
132954cb0
141a63cb9
15124b014
hexc8a35b

13149019 has 8 divisors (see below), whose sum is σ = 14287392. Its totient is φ = 12028800.

The previous prime is 13149001. The next prime is 13149043. The reversal of 13149019 is 91094131.

It is a happy number.

13149019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13149019 - 29 = 13148507 is a prime.

It is a super-2 number, since 2×131490192 = 345793401324722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13149119) 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, 3007 + ... + 5944.

It is an arithmetic number, because the mean of its divisors is an integer number (1785924).

Almost surely, 213149019 is an apocalyptic number.

13149019 is a deficient number, since it is larger than the sum of its proper divisors (1138373).

13149019 is a wasteful number, since it uses less digits than its factorization.

13149019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9077.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 13149019 is about 3626.1576082680. The cubic root of 13149019 is about 236.0285024945.

The spelling of 13149019 in words is "thirteen million, one hundred forty-nine thousand, nineteen".

Divisors: 1 13 113 1469 8951 116363 1011463 13149019