20046530 has 32 divisors (see below), whose sum is σ = 41814144. Its totient is φ = 6777216.

The previous prime is 20046529. The next prime is 20046571. The reversal of 20046530 is 3564002.

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, 3149 + ... + 7071.

It is an arithmetic number, because the mean of its divisors is an integer number (1306692).

Almost surely, 2^20046530 is an apocalyptic number.

20046530 is an abundant number, since it is smaller than the sum of its proper divisors (21767614).

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

20046530 is a wasteful number, since it uses less digits than its factorization.

20046530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4010.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20046530 is about 4477.3351449272. The cubic root of 20046530 is about 271.6521017112.

The spelling of 20046530 in words is "twenty million, forty-six thousand, five hundred thirty".