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13223001424 = 241495546561
BaseRepresentation
bin11000101000010011…
…01111110101010000
31021010112102001220111
430110021233311100
5204040042021144
610024034451104
7645451441363
oct142411576520
937115361814
1013223001424
115676048756
122690433a94
1313296505c9
148d62180da
15525d01534
hex31426fd50

13223001424 has 20 divisors (see below), whose sum is σ = 25791513300. Its totient is φ = 6567127040.

The previous prime is 13223001419. The next prime is 13223001427. The reversal of 13223001424 is 42410032231.

It can be written as a sum of positive squares in 2 ways, for example, as 1071907600 + 12151093824 = 32740^2 + 110232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13223001395 and 13223001404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223001427) 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, 2770897 + ... + 2775664.

It is an arithmetic number, because the mean of its divisors is an integer number (1289575665).

Almost surely, 213223001424 is an apocalyptic number.

It is an amenable number.

13223001424 is a deficient number, since it is larger than the sum of its proper divisors (12568511876).

13223001424 is a wasteful number, since it uses less digits than its factorization.

13223001424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546718 (or 5546712 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 13223001424 its reverse (42410032231), we get a palindrome (55633033655).

The spelling of 13223001424 in words is "thirteen billion, two hundred twenty-three million, one thousand, four hundred twenty-four".

Divisors: 1 2 4 8 16 149 298 596 1192 2384 5546561 11093122 22186244 44372488 88744976 826437589 1652875178 3305750356 6611500712 13223001424