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13028493 = 320692099
BaseRepresentation
bin110001101100…
…110010001101
3220111220201210
4301230302031
511313402433
61143125033
7215511642
oct61546215
926456653
1013028493
117399555
124443779
13291218a
141a31dc9
151225463
hexc6cc8d

13028493 has 8 divisors (see below), whose sum is σ = 17388000. Its totient is φ = 8677328.

The previous prime is 13028489. The next prime is 13028501. The reversal of 13028493 is 39482031.

13028493 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 13028493 - 22 = 13028489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13028493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13028413) 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, 5158 + ... + 7256.

It is an arithmetic number, because the mean of its divisors is an integer number (2173500).

Almost surely, 213028493 is an apocalyptic number.

It is an amenable number.

13028493 is a deficient number, since it is larger than the sum of its proper divisors (4359507).

13028493 is a wasteful number, since it uses less digits than its factorization.

13028493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 13028493 is about 3609.5003809392. The cubic root of 13028493 is about 235.3051295202.

The spelling of 13028493 in words is "thirteen million, twenty-eight thousand, four hundred ninety-three".

Divisors: 1 3 2069 2099 6207 6297 4342831 13028493