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13049081 = 174317851
BaseRepresentation
bin110001110001…
…110011111001
3220112221222022
4301301303321
511320032311
61143404225
7215625653
oct61616371
926487868
1013049081
117402a71
124453675
13291b666
141a396d3
15122b5db
hexc71cf9

13049081 has 8 divisors (see below), whose sum is σ = 14138784. Its totient is φ = 11995200.

The previous prime is 13049053. The next prime is 13049093. The reversal of 13049081 is 18094031.

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

It is not a de Polignac number, because 13049081 - 26 = 13049017 is a prime.

It is a super-2 number, since 2×130490812 = 340557029889122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13049081.

It is not an unprimeable number, because it can be changed into a prime (13049051) 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, 8195 + ... + 9656.

It is an arithmetic number, because the mean of its divisors is an integer number (1767348).

Almost surely, 213049081 is an apocalyptic number.

It is an amenable number.

13049081 is a deficient number, since it is larger than the sum of its proper divisors (1089703).

13049081 is a wasteful number, since it uses less digits than its factorization.

13049081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17911.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 13049081 is about 3612.3511734049. The cubic root of 13049081 is about 235.4290096051.

The spelling of 13049081 in words is "thirteen million, forty-nine thousand, eighty-one".

Divisors: 1 17 43 731 17851 303467 767593 13049081