20450496 has 112 divisors (see below), whose sum is σ = 61740288. Its totient is φ = 5913600.

The previous prime is 20450491. The next prime is 20450531. The reversal of 20450496 is 69405402.

It is not an unprimeable number, because it can be changed into a prime (20450491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48366 + ... + 48786.

Almost surely, 2^20450496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20450496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30870144).

20450496 is an abundant number, since it is smaller than the sum of its proper divisors (41289792).

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

20450496 is a wasteful number, since it uses less digits than its factorization.

20450496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 20450496 is about 4522.2224624625. Note that the first 3 decimals coincide. The cubic root of 20450496 is about 273.4647051745.

Adding to 20450496 its reverse (69405402), we get a palindrome (89855898).

The spelling of 20450496 in words is "twenty million, four hundred fifty thousand, four hundred ninety-six".