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13048439 = 47927241
BaseRepresentation
bin110001110001…
…101001110111
3220112221002112
4301301221313
511320022224
61143401235
7215624045
oct61615167
926487075
1013048439
117402538
12445321b
13291b291
141a39395
15122b30e
hexc71a77

13048439 has 4 divisors (see below), whose sum is σ = 13076160. Its totient is φ = 13020720.

The previous prime is 13048433. The next prime is 13048487. The reversal of 13048439 is 93484031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93484031 = 199469769.

It is a cyclic number.

It is not a de Polignac number, because 13048439 - 216 = 12982903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13048433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13142 + ... + 14099.

It is an arithmetic number, because the mean of its divisors is an integer number (3269040).

Almost surely, 213048439 is an apocalyptic number.

13048439 is a deficient number, since it is larger than the sum of its proper divisors (27721).

13048439 is an equidigital number, since it uses as much as digits as its factorization.

13048439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27720.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 13048439 is about 3612.2623105195. The cubic root of 13048439 is about 235.4251485949.

The spelling of 13048439 in words is "thirteen million, forty-eight thousand, four hundred thirty-nine".

Divisors: 1 479 27241 13048439