20854224 has 60 divisors (see below), whose sum is σ = 59004036. Its totient is φ = 6875136.

The previous prime is 20854217. The next prime is 20854231. The reversal of 20854224 is 42245802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20854217) and next prime (20854231).

It can be written as a sum of positive squares in 2 ways, for example, as 14197824 + 6656400 = 3768^2 + 2580^2 .

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 13222 + ... + 14714.

Almost surely, 2^20854224 is an apocalyptic number.

20854224 is a gapful number since it is divisible by the number (24) 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 20854224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29502018).

20854224 is an abundant number, since it is smaller than the sum of its proper divisors (38149812).

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

20854224 is a wasteful number, since it uses less digits than its factorization.

20854224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 20854224 is about 4566.6425303498. The cubic root of 20854224 is about 275.2525459651.

The spelling of 20854224 in words is "twenty million, eight hundred fifty-four thousand, two hundred twenty-four".