20602445 has 16 divisors (see below), whose sum is σ = 25950720. Its totient is φ = 15681600.

The previous prime is 20602423. The next prime is 20602447. The reversal of 20602445 is 54420602.

It is not a de Polignac number, because 20602445 - 2⁸ = 20602189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20602445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20602447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8366 + ... + 10544.

It is an arithmetic number, because the mean of its divisors is an integer number (1621920).

Almost surely, 2^20602445 is an apocalyptic number.

It is an amenable number.

20602445 is a deficient number, since it is larger than the sum of its proper divisors (5348275).

20602445 is a wasteful number, since it uses less digits than its factorization.

20602445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20602445 is about 4538.9916281042. The cubic root of 20602445 is about 274.1403236341.

The spelling of 20602445 in words is "twenty million, six hundred two thousand, four hundred forty-five".