20320010 has 32 divisors (see below), whose sum is σ = 38782800. Its totient is φ = 7651840.

The previous prime is 20320007. The next prime is 20320021. The reversal of 20320010 is 1002302.

It can be written as a sum of positive squares in 8 ways, for example, as 1510441 + 18809569 = 1229^2 + 4337^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20320010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11036 + ... + 12744.

Almost surely, 2^20320010 is an apocalyptic number.

20320010 is a deficient number, since it is larger than the sum of its proper divisors (18462790).

20320010 is a wasteful number, since it uses less digits than its factorization.

20320010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 20320010 is about 4507.7721770294. The cubic root of 20320010 is about 272.8818427166.

Adding to 20320010 its reverse (1002302), we get a palindrome (21322312).

The spelling of 20320010 in words is "twenty million, three hundred twenty thousand, ten".