20070306 has 24 divisors (see below), whose sum is σ = 45377280. Its totient is φ = 6399096.

The previous prime is 20070257. The next prime is 20070307. The reversal of 20070306 is 60307002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20070307) 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 11 ways as a sum of consecutive naturals, for example, 23826 + ... + 24653.

It is an arithmetic number, because the mean of its divisors is an integer number (1890720).

Almost surely, 2^20070306 is an apocalyptic number.

20070306 is an abundant number, since it is smaller than the sum of its proper divisors (25306974).

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

20070306 is a wasteful number, since it uses less digits than its factorization.

20070306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48510 (or 48507 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 20070306 is about 4479.9895089163. The cubic root of 20070306 is about 271.7594560943.

Adding to 20070306 its reverse (60307002), we get a palindrome (80377308).

The spelling of 20070306 in words is "twenty million, seventy thousand, three hundred six".