20850010 has 16 divisors (see below), whose sum is σ = 38167200. Its totient is φ = 8198416.

The previous prime is 20850001. The next prime is 20850019. The reversal of 20850010 is 1005802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20850001) and next prime (20850019).

It is not an unprimeable number, because it can be changed into a prime (20850019) 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 7 ways as a sum of consecutive naturals, for example, 17080 + ... + 18259.

It is an arithmetic number, because the mean of its divisors is an integer number (2385450).

Almost surely, 2^20850010 is an apocalyptic number.

20850010 is a deficient number, since it is larger than the sum of its proper divisors (17317190).

20850010 is a wasteful number, since it uses less digits than its factorization.

20850010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35405.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 20850010 is about 4566.1811177394. The cubic root of 20850010 is about 275.2340046796.

Adding to 20850010 its reverse (1005802), we get a palindrome (21855812).

The spelling of 20850010 in words is "twenty million, eight hundred fifty thousand, ten".