20896480 has 96 divisors (see below), whose sum is σ = 55738368. Its totient is φ = 7334400.

The previous prime is 20896471. The next prime is 20896481. The reversal of 20896480 is 8469802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20896481) 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, 54369 + ... + 54751.

It is an arithmetic number, because the mean of its divisors is an integer number (580608).

Almost surely, 2^20896480 is an apocalyptic number.

20896480 is a gapful number since it is divisible by the number (20) 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 20896480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27869184).

20896480 is an abundant number, since it is smaller than the sum of its proper divisors (34841888).

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

20896480 is a wasteful number, since it uses less digits than its factorization.

20896480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 20896480 is about 4571.2667828513. The cubic root of 20896480 is about 275.4383312617.

The spelling of 20896480 in words is "twenty million, eight hundred ninety-six thousand, four hundred eighty".