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13224423 = 34408141
BaseRepresentation
bin110010011100…
…100111100111
3220212212111110
4302130213213
511341140143
61151240103
7220256112
oct62344747
926785443
1013224423
117512783
124519033
132980404
141a83579
151263533
hexc9c9e7

13224423 has 4 divisors (see below), whose sum is σ = 17632568. Its totient is φ = 8816280.

The previous prime is 13224391. The next prime is 13224457. The reversal of 13224423 is 32442231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32442231 = 310814077.

It is not a de Polignac number, because 13224423 - 25 = 13224391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13224423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13224223) 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, 2204068 + ... + 2204073.

It is an arithmetic number, because the mean of its divisors is an integer number (4408142).

Almost surely, 213224423 is an apocalyptic number.

13224423 is a deficient number, since it is larger than the sum of its proper divisors (4408145).

13224423 is an equidigital number, since it uses as much as digits as its factorization.

13224423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408144.

The product of its digits is 1152, while the sum is 21.

The square root of 13224423 is about 3636.5399764061. The cubic root of 13224423 is about 236.4788169714.

Adding to 13224423 its reverse (32442231), we get a palindrome (45666654).

The spelling of 13224423 in words is "thirteen million, two hundred twenty-four thousand, four hundred twenty-three".

Divisors: 1 3 4408141 13224423