20030424 has 64 divisors (see below), whose sum is σ = 52842240. Its totient is φ = 6314880.

The previous prime is 20030411. The next prime is 20030443. The reversal of 20030424 is 42403002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72174 + ... + 72450.

It is an arithmetic number, because the mean of its divisors is an integer number (825660).

Almost surely, 2^20030424 is an apocalyptic number.

20030424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20030424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26421120).

20030424 is an abundant number, since it is smaller than the sum of its proper divisors (32811816).

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

20030424 is a wasteful number, since it uses less digits than its factorization.

20030424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20030424 is about 4475.5361689970. The cubic root of 20030424 is about 271.5793309955.

Adding to 20030424 its reverse (42403002), we get a palindrome (62433426).

The spelling of 20030424 in words is "twenty million, thirty thousand, four hundred twenty-four".