20307135 has 8 divisors (see below), whose sum is σ = 32491440. Its totient is φ = 10830464.

The previous prime is 20307121. The next prime is 20307179. The reversal of 20307135 is 53170302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20307135 - 2⁵ = 20307103 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676890 + ... + 676919.

It is an arithmetic number, because the mean of its divisors is an integer number (4061430).

Almost surely, 2^20307135 is an apocalyptic number.

20307135 is a deficient number, since it is larger than the sum of its proper divisors (12184305).

20307135 is a wasteful number, since it uses less digits than its factorization.

20307135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353817.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 20307135 is about 4506.3438617132. The cubic root of 20307135 is about 272.8241968129.

Adding to 20307135 its reverse (53170302), we get a palindrome (73477437).

The spelling of 20307135 in words is "twenty million, three hundred seven thousand, one hundred thirty-five".