20854560 has 96 divisors (see below), whose sum is σ = 68584320. Its totient is φ = 5316608.

The previous prime is 20854549. The next prime is 20854577. The reversal of 20854560 is 6545802.

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 (30).

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, 10096 + ... + 11984.

It is an arithmetic number, because the mean of its divisors is an integer number (714420).

Almost surely, 2^20854560 is an apocalyptic number.

20854560 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 20854560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34292160).

20854560 is an abundant number, since it is smaller than the sum of its proper divisors (47729760).

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

20854560 is a wasteful number, since it uses less digits than its factorization.

20854560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930 (or 1922 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 20854560 is about 4566.6793187173. The cubic root of 20854560 is about 275.2540242325.

The spelling of 20854560 in words is "twenty million, eight hundred fifty-four thousand, five hundred sixty".