20608224 has 144 divisors (see below), whose sum is σ = 67970448. Its totient is φ = 5419008.

The previous prime is 20608219. The next prime is 20608229. The reversal of 20608224 is 42280602.

It is an interprime number because it is at equal distance from previous prime (20608219) and next prime (20608229).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 20608194 and 20608203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20608229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60984 + ... + 61320.

It is an arithmetic number, because the mean of its divisors is an integer number (472017).

Almost surely, 2^20608224 is an apocalyptic number.

20608224 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 20608224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33985224).

20608224 is an abundant number, since it is smaller than the sum of its proper divisors (47362224).

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

20608224 is a wasteful number, since it uses less digits than its factorization.

20608224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20608224 is about 4539.6281786067. The cubic root of 20608224 is about 274.1659534210.

Adding to 20608224 its reverse (42280602), we get a palindrome (62888826).

The spelling of 20608224 in words is "twenty million, six hundred eight thousand, two hundred twenty-four".