20854568 has 64 divisors (see below), whose sum is σ = 47416320. Its totient is φ = 8409600.

The previous prime is 20854549. The next prime is 20854577. The reversal of 20854568 is 86545802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71030 + ... + 71322.

It is an arithmetic number, because the mean of its divisors is an integer number (740880).

Almost surely, 2^20854568 is an apocalyptic number.

20854568 is a gapful number since it is divisible by the number (28) 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 20854568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23708160).

20854568 is an abundant number, since it is smaller than the sum of its proper divisors (26561752).

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

20854568 is a wasteful number, since it uses less digits than its factorization.

20854568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 20854568 is about 4566.6801946272. The cubic root of 20854568 is about 275.2540594292.

The spelling of 20854568 in words is "twenty million, eight hundred fifty-four thousand, five hundred sixty-eight".