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223404013 = 7103309853
BaseRepresentation
bin11010101000011…
…01111111101101
3120120101002200201
431110031333231
5424142412023
634100153501
75351621440
oct1524157755
9516332621
10223404013
11105118818
1262998891
133738cc31
1421955657
151492dbad
hexd50dfed

223404013 has 8 divisors (see below), whose sum is σ = 257798528. Its totient is φ = 189629424.

The previous prime is 223404007. The next prime is 223404029. The reversal of 223404013 is 310404322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-223404013 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 (223404043) 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, 154206 + ... + 155647.

It is an arithmetic number, because the mean of its divisors is an integer number (32224816).

Almost surely, 2223404013 is an apocalyptic number.

It is an amenable number.

223404013 is a deficient number, since it is larger than the sum of its proper divisors (34394515).

223404013 is a wasteful number, since it uses less digits than its factorization.

223404013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309963.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 223404013 is about 14946.7057574571. The cubic root of 223404013 is about 606.7786946773.

Adding to 223404013 its reverse (310404322), we get a palindrome (533808335).

The spelling of 223404013 in words is "two hundred twenty-three million, four hundred four thousand, thirteen".

Divisors: 1 7 103 721 309853 2168971 31914859 223404013