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20302033 = 157112923
BaseRepresentation
bin100110101110…
…0100011010001
31102012110011011
41031130203101
520144131113
62003050521
7334364413
oct115344321
942173134
1020302033
1110507244
126970a41
13428aa4b
1429a69b3
151bb063d
hex135c8d1

20302033 has 4 divisors (see below), whose sum is σ = 20316528. Its totient is φ = 20287540.

The previous prime is 20302027. The next prime is 20302067. The reversal of 20302033 is 33020302.

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.

It is a cyclic number.

It is not a de Polignac number, because 20302033 - 213 = 20293841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20302133) 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, 4891 + ... + 8032.

It is an arithmetic number, because the mean of its divisors is an integer number (5079132).

Almost surely, 220302033 is an apocalyptic number.

It is an amenable number.

20302033 is a deficient number, since it is larger than the sum of its proper divisors (14495).

20302033 is a wasteful number, since it uses less digits than its factorization.

20302033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14494.

The product of its (nonzero) digits is 108, while the sum is 13.

The square root of 20302033 is about 4505.7777353083. Note that the first 4 decimals coincide. The cubic root of 20302033 is about 272.8013466235.

Adding to 20302033 its reverse (33020302), we get a palindrome (53322335).

The spelling of 20302033 in words is "twenty million, three hundred two thousand, thirty-three".

Divisors: 1 1571 12923 20302033