20835006 has 16 divisors (see below), whose sum is σ = 42557184. Its totient is φ = 6797144.

The previous prime is 20834981. The next prime is 20835037. The reversal of 20835006 is 60053802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36660 + ... + 37223.

It is an arithmetic number, because the mean of its divisors is an integer number (2659824).

Almost surely, 2^20835006 is an apocalyptic number.

20835006 is an abundant number, since it is smaller than the sum of its proper divisors (21722178).

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

20835006 is a wasteful number, since it uses less digits than its factorization.

20835006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73935.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20835006 is about 4564.5378736516. The cubic root of 20835006 is about 275.1679679090.

Adding to 20835006 its reverse (60053802), we get a palindrome (80888808).

Subtracting 20835006 from its reverse (60053802), we obtain a triangular number (39218796 = T₈₈₅₆).

The spelling of 20835006 in words is "twenty million, eight hundred thirty-five thousand, six".