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13028455 = 511236881
BaseRepresentation
bin110001101100…
…110001100111
3220111220200101
4301230301213
511313402310
61143124531
7215511556
oct61546147
926456611
1013028455
117399520
124443747
13291215b
141a31d9d
15122543a
hexc6cc67

13028455 has 8 divisors (see below), whose sum is σ = 17055504. Its totient is φ = 9475200.

The previous prime is 13028437. The next prime is 13028459. The reversal of 13028455 is 55482031.

13028455 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 not a de Polignac number, because 13028455 - 25 = 13028423 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 (13028459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118386 + ... + 118495.

It is an arithmetic number, because the mean of its divisors is an integer number (2131938).

Almost surely, 213028455 is an apocalyptic number.

13028455 is a deficient number, since it is larger than the sum of its proper divisors (4027049).

13028455 is a wasteful number, since it uses less digits than its factorization.

13028455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236897.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 13028455 is about 3609.4951170489. The cubic root of 13028455 is about 235.3049007497.

The spelling of 13028455 in words is "thirteen million, twenty-eight thousand, four hundred fifty-five".

Divisors: 1 5 11 55 236881 1184405 2605691 13028455