20869224 has 16 divisors (see below), whose sum is σ = 52173120. Its totient is φ = 6956400.

The previous prime is 20869223. The next prime is 20869237. The reversal of 20869224 is 42296802.

It is not an unprimeable number, because it can be changed into a prime (20869223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434752 + ... + 434799.

It is an arithmetic number, because the mean of its divisors is an integer number (3260820).

Almost surely, 2^20869224 is an apocalyptic number.

20869224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20869224 is an abundant number, since it is smaller than the sum of its proper divisors (31303896).

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

20869224 is a wasteful number, since it uses less digits than its factorization.

20869224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869560 (or 869556 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20869224 is about 4568.2845795769. The cubic root of 20869224 is about 275.3185245836.

The spelling of 20869224 in words is "twenty million, eight hundred sixty-nine thousand, two hundred twenty-four".