20030346 has 48 divisors (see below), whose sum is σ = 50766144. Its totient is φ = 5588352.

The previous prime is 20030333. The next prime is 20030347. The reversal of 20030346 is 64303002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20030347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3570 + ... + 7266.

It is an arithmetic number, because the mean of its divisors is an integer number (1057628).

Almost surely, 2^20030346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20030346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25383072).

20030346 is an abundant number, since it is smaller than the sum of its proper divisors (30735798).

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

20030346 is a wasteful number, since it uses less digits than its factorization.

20030346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3755 (or 3752 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20030346 is about 4475.5274549487. The cubic root of 20030346 is about 271.5789784782.

Adding to 20030346 its reverse (64303002), we get a palindrome (84333348).

The spelling of 20030346 in words is "twenty million, thirty thousand, three hundred forty-six".