20336530 has 16 divisors (see below), whose sum is σ = 37122624. Its totient is φ = 8019760.

The previous prime is 20336513. The next prime is 20336543. The reversal of 20336530 is 3563302.

It is an unprimeable number.

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, 13612 + ... + 15031.

It is an arithmetic number, because the mean of its divisors is an integer number (2320164).

Almost surely, 2^20336530 is an apocalyptic number.

20336530 is a deficient number, since it is larger than the sum of its proper divisors (16786094).

20336530 is a wasteful number, since it uses less digits than its factorization.

20336530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28721.

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 20336530 is about 4509.6041954921. The cubic root of 20336530 is about 272.9557729121.

Adding to 20336530 its reverse (3563302), we get a palindrome (23899832).

The spelling of 20336530 in words is "twenty million, three hundred thirty-six thousand, five hundred thirty".