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BaseRepresentation
bin100110001100…
…0011011111001
31101200021102211
41030120123321
520111214113
61553055121
7332123122
oct114303371
941607384
1020023033
1110336668
1268574a1
1341c0a64
142933049
151b57b3d
hex13186f9

20023033 has 4 divisors (see below), whose sum is σ = 20038528. Its totient is φ = 20007540.

The previous prime is 20023027. The next prime is 20023037. The reversal of 20023033 is 33032002.

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 20023033 - 25 = 20023001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20023037) 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, 5613 + ... + 8458.

It is an arithmetic number, because the mean of its divisors is an integer number (5009632).

Almost surely, 220023033 is an apocalyptic number.

It is an amenable number.

20023033 is a deficient number, since it is larger than the sum of its proper divisors (15495).

20023033 is a wasteful number, since it uses less digits than its factorization.

20023033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15494.

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

The square root of 20023033 is about 4474.7103816895. The cubic root of 20023033 is about 271.5459236519.

Adding to 20023033 its reverse (33032002), we get a palindrome (53055035).

The spelling of 20023033 in words is "twenty million, twenty-three thousand, thirty-three".

Divisors: 1 1423 14071 20023033