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13423033 = 131032541
BaseRepresentation
bin110011001101…
…000110111001
3221020221221101
4303031012321
511414014113
61155411401
7222044131
oct63150671
927227841
1013423033
117638a18
1245b3b61
132a1c930
141ad5ac1
1512a22dd
hexccd1b9

13423033 has 4 divisors (see below), whose sum is σ = 14455588. Its totient is φ = 12390480.

The previous prime is 13423019. The next prime is 13423051. The reversal of 13423033 is 33032431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33032431 = 191738549.

It can be written as a sum of positive squares in 2 ways, for example, as 6310144 + 7112889 = 2512^2 + 2667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13423033 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 13423033.

It is not an unprimeable number, because it can be changed into a prime (13423073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516258 + ... + 516283.

It is an arithmetic number, because the mean of its divisors is an integer number (3613897).

Almost surely, 213423033 is an apocalyptic number.

13423033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13423033 is a deficient number, since it is larger than the sum of its proper divisors (1032555).

13423033 is a wasteful number, since it uses less digits than its factorization.

13423033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032554.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 13423033 is about 3663.7457608300. The cubic root of 13423033 is about 237.6567858562.

Adding to 13423033 its reverse (33032431), we get a palindrome (46455464).

The spelling of 13423033 in words is "thirteen million, four hundred twenty-three thousand, thirty-three".

Divisors: 1 13 1032541 13423033