20002302 has 64 divisors (see below), whose sum is σ = 47822400. Its totient is φ = 6251904.

The previous prime is 20002261. The next prime is 20002313. The reversal of 20002302 is 20320002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74224 + ... + 74492.

It is an arithmetic number, because the mean of its divisors is an integer number (747225).

Almost surely, 2^20002302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20002302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23911200).

20002302 is an abundant number, since it is smaller than the sum of its proper divisors (27820098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20002302 is an equidigital number, since it uses as much as digits as its factorization.

20002302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 20002302 is about 4472.3933190184. The cubic root of 20002302 is about 271.4521755755.

Adding to 20002302 its reverse (20320002), we get a palindrome (40322304).

The spelling of 20002302 in words is "twenty million, two thousand, three hundred two".