20860896 has 96 divisors (see below), whose sum is σ = 64350720. Its totient is φ = 5792256.

The previous prime is 20860883. The next prime is 20860913. The reversal of 20860896 is 69806802.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24445 + ... + 25283.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^20860896 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 20860896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32175360).

20860896 is an abundant number, since it is smaller than the sum of its proper divisors (43489824).

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

20860896 is a wasteful number, since it uses less digits than its factorization.

20860896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 20860896 is about 4567.3729867398. The cubic root of 20860896 is about 275.2818971599.

The spelling of 20860896 in words is "twenty million, eight hundred sixty thousand, eight hundred ninety-six".