20030800 has 30 divisors (see below), whose sum is σ = 48124958. Its totient is φ = 8012160.

The previous prime is 20030783. The next prime is 20030809. The reversal of 20030800 is 803002.

It can be written as a sum of positive squares in 3 ways, for example, as 3579664 + 16451136 = 1892^2 + 4056^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24639 + ... + 25438.

Almost surely, 2^20030800 is an apocalyptic number.

20030800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20030800 is an abundant number, since it is smaller than the sum of its proper divisors (28094158).

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

20030800 is a wasteful number, since it uses less digits than its factorization.

20030800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50095 (or 50084 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20030800 is about 4475.5781749401. The cubic root of 20030800 is about 271.5810302970.

Adding to 20030800 its reverse (803002), we get a palindrome (20833802).

The spelling of 20030800 in words is "twenty million, thirty thousand, eight hundred".