20853224 has 24 divisors (see below), whose sum is σ = 45484290. Its totient is φ = 8936928.

The previous prime is 20853193. The next prime is 20853227. The reversal of 20853224 is 42235802.

It can be written as a sum of positive squares in only one way, i.e., 16144324 + 4708900 = 4018^2 + 2170^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20853193 and 20853202.

It is not an unprimeable number, because it can be changed into a prime (20853227) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 26207 + ... + 26990.

Almost surely, 2^20853224 is an apocalyptic number.

It is an amenable number.

20853224 is an abundant number, since it is smaller than the sum of its proper divisors (24631066).

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

20853224 is a wasteful number, since it uses less digits than its factorization.

20853224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53217 (or 53206 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 20853224 is about 4566.5330394075. The cubic root of 20853224 is about 275.2481462658.

The spelling of 20853224 in words is "twenty million, eight hundred fifty-three thousand, two hundred twenty-four".