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8201423 = 71115513
BaseRepresentation
bin11111010010010011001111
3120102200020102
4133102103033
54044421143
6451441315
7126465566
oct37222317
916380212
108201423
1146a193a
1228b623b
131912019
141136bdd
15ac00b8
hex7d24cf

8201423 has 4 divisors (see below), whose sum is σ = 8317008. Its totient is φ = 8085840.

The previous prime is 8201419. The next prime is 8201441. The reversal of 8201423 is 3241028.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8201423 - 22 = 8201419 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 8201395 and 8201404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8204423) 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, 57686 + ... + 57827.

It is an arithmetic number, because the mean of its divisors is an integer number (2079252).

Almost surely, 28201423 is an apocalyptic number.

8201423 is a deficient number, since it is larger than the sum of its proper divisors (115585).

8201423 is a wasteful number, since it uses less digits than its factorization.

8201423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115584.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8201423 is about 2863.8126684544. The cubic root of 8201423 is about 201.6646315696.

The spelling of 8201423 in words is "eight million, two hundred one thousand, four hundred twenty-three".

Divisors: 1 71 115513 8201423