2002023 has 8 divisors (see below), whose sum is σ = 2966000.
Its totient is φ = 1334664.
The previous prime is 2002019. The next prime is 2002061. The reversal of 2002023 is 3202002.
It is not a de Polignac number, because 2002023 - 22 = 2002019 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 2001996 and 2002014.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2002093) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37048 + ... + 37101.
It is an arithmetic number, because the mean of its divisors is an integer number (370750).
22002023 is an apocalyptic number.
2002023 is a deficient number, since it is larger than the sum of its proper divisors (963977).
2002023 is an equidigital number, since it uses as much as digits as its factorization.
2002023 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 74158 (or 74152 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 9.
The square root of 2002023 is about 1414.9286201077.
The cubic root of 2002023 is about 126.0345710126.
Adding to 2002023 its reverse (3202002), we get a palindrome (5204025).
The spelling of 2002023 in words is "two million, two thousand, twenty-three".