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13223983 = 17973877
BaseRepresentation
bin110010011100…
…100000101111
3220212211220011
4302130200233
511341131413
61151234051
7220254613
oct62344057
926784804
1013223983
117512413
124518927
132980156
141a83343
15126333d
hexc9c82f

13223983 has 4 divisors (see below), whose sum is σ = 13298040. Its totient is φ = 13149928.

The previous prime is 13223957. The next prime is 13224037. The reversal of 13223983 is 38932231.

13223983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13223983 - 29 = 13223471 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 (13223923) 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, 36760 + ... + 37117.

It is an arithmetic number, because the mean of its divisors is an integer number (3324510).

Almost surely, 213223983 is an apocalyptic number.

13223983 is a deficient number, since it is larger than the sum of its proper divisors (74057).

13223983 is an equidigital number, since it uses as much as digits as its factorization.

13223983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74056.

The product of its digits is 7776, while the sum is 31.

The square root of 13223983 is about 3636.4794788366. The cubic root of 13223983 is about 236.4761942525.

The spelling of 13223983 in words is "thirteen million, two hundred twenty-three thousand, nine hundred eighty-three".

Divisors: 1 179 73877 13223983