20009200 has 30 divisors (see below), whose sum is σ = 48073064. Its totient is φ = 8003520.

The previous prime is 20009183. The next prime is 20009243. The reversal of 20009200 is 290002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24612 + ... + 25411.

Almost surely, 2^20009200 is an apocalyptic number.

20009200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20009200 is an abundant number, since it is smaller than the sum of its proper divisors (28063864).

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

20009200 is a wasteful number, since it uses less digits than its factorization.

20009200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50041 (or 50030 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 20009200 is about 4473.1644280084. The cubic root of 20009200 is about 271.4833763493.

Adding to 20009200 its reverse (290002), we get a palindrome (20299202).

The spelling of 20009200 in words is "twenty million, nine thousand, two hundred".