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13057423 = 431512011
BaseRepresentation
bin110001110011…
…110110001111
3220120101102021
4301303312033
511320314143
61143511011
7215662201
oct61636617
926511367
1013057423
117409265
124458467
1329223b2
141a3c771
15122dced
hexc73d8f

13057423 has 8 divisors (see below), whose sum is σ = 13456256. Its totient is φ = 12663000.

The previous prime is 13057403. The next prime is 13057433. The reversal of 13057423 is 32475031.

13057423 is digitally balanced in base 3, 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 a de Polignac number, because none of the positive numbers 2k-13057423 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 (13057403) 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, 5488 + ... + 7498.

It is an arithmetic number, because the mean of its divisors is an integer number (1682032).

Almost surely, 213057423 is an apocalyptic number.

13057423 is the 1932-nd centered heptagonal number.

13057423 is a deficient number, since it is larger than the sum of its proper divisors (398833).

13057423 is a wasteful number, since it uses less digits than its factorization.

13057423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 13057423 is about 3613.5056385732. The cubic root of 13057423 is about 235.4791671716.

The spelling of 13057423 in words is "thirteen million, fifty-seven thousand, four hundred twenty-three".

Divisors: 1 43 151 2011 6493 86473 303661 13057423