20995296 has 96 divisors (see below), whose sum is σ = 63705600. Its totient is φ = 5930496.

The previous prime is 20995291. The next prime is 20995301. The reversal of 20995296 is 69259902.

It is an interprime number because it is at equal distance from previous prime (20995291) and next prime (20995301).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20995291) 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, 105405 + ... + 105603.

It is an arithmetic number, because the mean of its divisors is an integer number (663600).

Almost surely, 2^20995296 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 20995296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31852800).

20995296 is an abundant number, since it is smaller than the sum of its proper divisors (42710304).

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

20995296 is a wasteful number, since it uses less digits than its factorization.

20995296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 20995296 is about 4582.0624177329. The cubic root of 20995296 is about 275.8718161326.

The spelling of 20995296 in words is "twenty million, nine hundred ninety-five thousand, two hundred ninety-six".