20603622 has 32 divisors (see below), whose sum is σ = 45416448. Its totient is φ = 6191136.

The previous prime is 20603621. The next prime is 20603633. The reversal of 20603622 is 22630602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20603621) 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 15 ways as a sum of consecutive naturals, for example, 283 + ... + 6425.

It is an arithmetic number, because the mean of its divisors is an integer number (1419264).

Almost surely, 2^20603622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20603622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22708224).

20603622 is an abundant number, since it is smaller than the sum of its proper divisors (24812826).

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

20603622 is a wasteful number, since it uses less digits than its factorization.

20603622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20603622 is about 4539.1212806005. The cubic root of 20603622 is about 274.1455440018.

The spelling of 20603622 in words is "twenty million, six hundred three thousand, six hundred twenty-two".