20030420 has 24 divisors (see below), whose sum is σ = 44538984. Its totient is φ = 7540736.

The previous prime is 20030411. The next prime is 20030443. The reversal of 20030420 is 2403002.

It can be written as a sum of positive squares in 4 ways, for example, as 5982916 + 14047504 = 2446^2 + 3748^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29117 + ... + 29796.

It is an arithmetic number, because the mean of its divisors is an integer number (1855791).

Almost surely, 2^20030420 is an apocalyptic number.

20030420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20030420 is an abundant number, since it is smaller than the sum of its proper divisors (24508564).

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

20030420 is a wasteful number, since it uses less digits than its factorization.

20030420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58939 (or 58937 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20030420 is about 4475.5357221231. The cubic root of 20030420 is about 271.5793129177.

Adding to 20030420 its reverse (2403002), we get a palindrome (22433422).

The spelling of 20030420 in words is "twenty million, thirty thousand, four hundred twenty".