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20232829 = 46143889
BaseRepresentation
bin100110100101…
…1101001111101
31102001221020001
41031023221331
520134422304
62001354301
7333655561
oct115135175
942057201
1020232829
111046a251
126938991
1342653b6
1429896a1
151b99da4
hex134ba7d

20232829 has 4 divisors (see below), whose sum is σ = 20277180. Its totient is φ = 20188480.

The previous prime is 20232787. The next prime is 20232841. The reversal of 20232829 is 92823202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92823202 = 246411601.

It can be written as a sum of positive squares in 2 ways, for example, as 13704804 + 6528025 = 3702^2 + 2555^2 .

It is a cyclic number.

It is not a de Polignac number, because 20232829 - 211 = 20230781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20232797 and 20232806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232029) 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, 21484 + ... + 22405.

It is an arithmetic number, because the mean of its divisors is an integer number (5069295).

Almost surely, 220232829 is an apocalyptic number.

It is an amenable number.

20232829 is a deficient number, since it is larger than the sum of its proper divisors (44351).

20232829 is an equidigital number, since it uses as much as digits as its factorization.

20232829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44350.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20232829 is about 4498.0917064907. The cubic root of 20232829 is about 272.4910257124.

The spelling of 20232829 in words is "twenty million, two hundred thirty-two thousand, eight hundred twenty-nine".

Divisors: 1 461 43889 20232829