20350605 has 32 divisors (see below), whose sum is σ = 36754560. Its totient is φ = 9524480.

The previous prime is 20350597. The next prime is 20350609. The reversal of 20350605 is 50605302.

It is not a de Polignac number, because 20350605 - 2³ = 20350597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2659 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (1148580).

Almost surely, 2^20350605 is an apocalyptic number.

It is an amenable number.

20350605 is a deficient number, since it is larger than the sum of its proper divisors (16403955).

20350605 is a wasteful number, since it uses less digits than its factorization.

20350605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4301.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 20350605 is about 4511.1644838112. The cubic root of 20350605 is about 273.0187296788.

Adding to 20350605 its reverse (50605302), we get a palindrome (70955907).

The spelling of 20350605 in words is "twenty million, three hundred fifty thousand, six hundred five".