20603296 has 96 divisors (see below), whose sum is σ = 50319360. Its totient is φ = 8107776.

The previous prime is 20603281. The next prime is 20603309. The reversal of 20603296 is 69230602.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199981 + ... + 200083.

It is an arithmetic number, because the mean of its divisors is an integer number (524160).

Almost surely, 2^20603296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20603296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25159680).

20603296 is an abundant number, since it is smaller than the sum of its proper divisors (29716064).

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

20603296 is a wasteful number, since it uses less digits than its factorization.

20603296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20603296 is about 4539.0853704243. The cubic root of 20603296 is about 274.1440981085.

Adding to 20603296 its reverse (69230602), we get a palindrome (89833898).

It can be divided in two parts, 2060 and 3296, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 20603296 in words is "twenty million, six hundred three thousand, two hundred ninety-six".