20854512 has 120 divisors (see below), whose sum is σ = 70682976. Its totient is φ = 5603328.

The previous prime is 20854469. The next prime is 20854523. The reversal of 20854512 is 21545802.

It is a happy number.

20854512 is a `hidden beast` number, since 208 + 5 + 451 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16528 + ... + 17744.

Almost surely, 2^20854512 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 20854512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35341488).

20854512 is an abundant number, since it is smaller than the sum of its proper divisors (49828464).

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

20854512 is a wasteful number, since it uses less digits than its factorization.

20854512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255 (or 1246 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 20854512 is about 4566.6740632544. The cubic root of 20854512 is about 275.2538130524.

The spelling of 20854512 in words is "twenty million, eight hundred fifty-four thousand, five hundred twelve".