20602224 has 60 divisors (see below), whose sum is σ = 58061016. Its totient is φ = 6819456.

The previous prime is 20602223. The next prime is 20602237. The reversal of 20602224 is 42220602.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20602197 and 20602206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20602223) 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 11 ways as a sum of consecutive naturals, for example, 24499 + ... + 25325.

Almost surely, 2^20602224 is an apocalyptic number.

20602224 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 20602224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29030508).

20602224 is an abundant number, since it is smaller than the sum of its proper divisors (37458792).

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

20602224 is a wasteful number, since it uses less digits than its factorization.

20602224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20602224 is about 4538.9672834247. The cubic root of 20602224 is about 274.1393434070.

Adding to 20602224 its reverse (42220602), we get a palindrome (62822826).

The spelling of 20602224 in words is "twenty million, six hundred two thousand, two hundred twenty-four".