20450196 has 72 divisors (see below), whose sum is σ = 57222984. Its totient is φ = 6117120.

The previous prime is 20450149. The next prime is 20450207. The reversal of 20450196 is 69105402.

20450196 is a `hidden beast` number, since 20 + 450 + 196 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7918596 + 12531600 = 2814^2 + 3540^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16726 + ... + 17906.

Almost surely, 2^20450196 is an apocalyptic number.

20450196 is a gapful number since it is divisible by the number (26) 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 20450196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28611492).

20450196 is an abundant number, since it is smaller than the sum of its proper divisors (36772788).

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

20450196 is a wasteful number, since it uses less digits than its factorization.

20450196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 20450196 is about 4522.1892928094. The cubic root of 20450196 is about 273.4633679647.

Adding to 20450196 its reverse (69105402), we get a palindrome (89555598).

The spelling of 20450196 in words is "twenty million, four hundred fifty thousand, one hundred ninety-six".