20896512 has 216 divisors, whose sum is σ = 71817984. Its totient is φ = 5271552.

The previous prime is 20896493. The next prime is 20896517. The reversal of 20896512 is 21569802.

It is a super-2 number, since 2×20896512² = 873328427532288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20896517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 908533 + ... + 908555.

Almost surely, 2^20896512 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 20896512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35908992).

20896512 is an abundant number, since it is smaller than the sum of its proper divisors (50921472).

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

20896512 is a wasteful number, since it uses less digits than its factorization.

20896512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 20896512 is about 4571.2702829739. The cubic root of 20896512 is about 275.4384718599.

The spelling of 20896512 in words is "twenty million, eight hundred ninety-six thousand, five hundred twelve".