20023602 has 16 divisors (see below), whose sum is σ = 40147392. Its totient is φ = 6657840.

The previous prime is 20023589. The next prime is 20023609. The reversal of 20023602 is 20632002.

It is not an unprimeable number, because it can be changed into a prime (20023609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1438 + ... + 6489.

It is an arithmetic number, because the mean of its divisors is an integer number (2509212).

Almost surely, 2^20023602 is an apocalyptic number.

20023602 is an abundant number, since it is smaller than the sum of its proper divisors (20123790).

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

20023602 is a wasteful number, since it uses less digits than its factorization.

20023602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8353.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20023602 is about 4474.7739607716. The cubic root of 20023602 is about 271.5484958258.

Adding to 20023602 its reverse (20632002), we get a palindrome (40655604).

Subtracting 20023602 from its reverse (20632002), we obtain a square (608400 = 780²).

The spelling of 20023602 in words is "twenty million, twenty-three thousand, six hundred two".