20485012 has 12 divisors (see below), whose sum is σ = 35895636. Its totient is φ = 10229120.

The previous prime is 20485009. The next prime is 20485033. The reversal of 20485012 is 21058402.

It can be written as a sum of positive squares in 2 ways, for example, as 8678916 + 11806096 = 2946^2 + 3436^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 618 + ... + 6430.

It is an arithmetic number, because the mean of its divisors is an integer number (2991303).

Almost surely, 2^20485012 is an apocalyptic number.

It is an amenable number.

20485012 is a deficient number, since it is larger than the sum of its proper divisors (15410624).

20485012 is a wasteful number, since it uses less digits than its factorization.

20485012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6698 (or 6696 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 20485012 is about 4526.0371187165. The cubic root of 20485012 is about 273.6184683964.

The spelling of 20485012 in words is "twenty million, four hundred eighty-five thousand, twelve".