20030416 has 60 divisors (see below), whose sum is σ = 46754820. Its totient is φ = 8279040.

The previous prime is 20030411. The next prime is 20030443. The reversal of 20030416 is 61403002.

It can be written as a sum of positive squares in 2 ways, for example, as 6780816 + 13249600 = 2604^2 + 3640^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a self number, because there is not a number n which added to its sum of digits gives 20030416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030411) 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 11 ways as a sum of consecutive naturals, for example, 22296 + ... + 23176.

It is an arithmetic number, because the mean of its divisors is an integer number (779247).

Almost surely, 2^20030416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20030416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23377410).

20030416 is an abundant number, since it is smaller than the sum of its proper divisors (26724404).

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

20030416 is a wasteful number, since it uses less digits than its factorization.

20030416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20030416 is about 4475.5352752492. The cubic root of 20030416 is about 271.5792948399.

Adding to 20030416 its reverse (61403002), we get a palindrome (81433418).

The spelling of 20030416 in words is "twenty million, thirty thousand, four hundred sixteen".