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13013049 = 37619669
BaseRepresentation
bin110001101001…
…000000111001
3220111010112210
4301221000321
511312404144
61142525333
7215415630
oct61510071
926433483
1013013049
117388995
124436849
13290813a
141a2a517
151220ab9
hexc69039

13013049 has 8 divisors (see below), whose sum is σ = 19829440. Its totient is φ = 7436016.

The previous prime is 13013027. The next prime is 13013057. The reversal of 13013049 is 94031031.

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

It is not a de Polignac number, because 13013049 - 27 = 13012921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 619669 = 13013049 / (1 + 3 + 0 + 1 + 3 + 0 + 4 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13013059) 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, 309814 + ... + 309855.

It is an arithmetic number, because the mean of its divisors is an integer number (2478680).

Almost surely, 213013049 is an apocalyptic number.

It is an amenable number.

13013049 is a deficient number, since it is larger than the sum of its proper divisors (6816391).

13013049 is an equidigital number, since it uses as much as digits as its factorization.

13013049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619679.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13013049 is about 3607.3603923090. The cubic root of 13013049 is about 235.2121157105.

The spelling of 13013049 in words is "thirteen million, thirteen thousand, forty-nine".

Divisors: 1 3 7 21 619669 1859007 4337683 13013049