20440896 has 112 divisors (see below), whose sum is σ = 63008256. Its totient is φ = 5727744.

The previous prime is 20440891. The next prime is 20440913. The reversal of 20440896 is 69804402.

20440896 = T₄₉ + T₅₀ + ... + T₄₉₆.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89935 + ... + 90161.

Almost surely, 2^20440896 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 20440896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31504128).

20440896 is an abundant number, since it is smaller than the sum of its proper divisors (42567360).

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

20440896 is a wasteful number, since it uses less digits than its factorization.

20440896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20440896 is about 4521.1609128630. The cubic root of 20440896 is about 273.4219079719.

The spelling of 20440896 in words is "twenty million, four hundred forty thousand, eight hundred ninety-six".