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12020033 = 31387743
BaseRepresentation
bin101101110110…
…100101000001
3211121200101102
4231312211001
511034120113
61105344145
7204111554
oct55664501
924550342
1012020033
11686a913
124038055
13264b15c
14184c69b
1510c6758
hexb76941

12020033 has 4 divisors (see below), whose sum is σ = 12407808. Its totient is φ = 11632260.

The previous prime is 12019993. The next prime is 12020051. The reversal of 12020033 is 33002021.

12020033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33002021 = 132538617.

It is a cyclic number.

It is not a de Polignac number, because 12020033 - 210 = 12019009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12019996 and 12020023.

It is not an unprimeable number, because it can be changed into a prime (12020083) 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, 193841 + ... + 193902.

It is an arithmetic number, because the mean of its divisors is an integer number (3101952).

Almost surely, 212020033 is an apocalyptic number.

It is an amenable number.

12020033 is a deficient number, since it is larger than the sum of its proper divisors (387775).

12020033 is an equidigital number, since it uses as much as digits as its factorization.

12020033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387774.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 12020033 is about 3466.9919238441. The cubic root of 12020033 is about 229.0701780173.

Adding to 12020033 its reverse (33002021), we get a palindrome (45022054).

The spelling of 12020033 in words is "twelve million, twenty thousand, thirty-three".

Divisors: 1 31 387743 12020033