20411200 has 42 divisors (see below), whose sum is σ = 50228246. Its totient is φ = 8163840.

The previous prime is 20411147. The next prime is 20411221. The reversal of 20411200 is 211402.

It can be written as a sum of positive squares in 3 ways, for example, as 1679616 + 18731584 = 1296^2 + 4328^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 4779 + ... + 7978.

Almost surely, 2^20411200 is an apocalyptic number.

20411200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20411200 is an abundant number, since it is smaller than the sum of its proper divisors (29817046).

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

20411200 is a wasteful number, since it uses less digits than its factorization.

20411200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12779 (or 12764 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20411200 is about 4517.8756069640. The cubic root of 20411200 is about 273.2894370648.

Adding to 20411200 its reverse (211402), we get a palindrome (20622602).

The spelling of 20411200 in words is "twenty million, four hundred eleven thousand, two hundred".