20730435 has 16 divisors (see below), whose sum is σ = 36184320. Its totient is φ = 10051040.

The previous prime is 20730433. The next prime is 20730439. The reversal of 20730435 is 53403702.

It is not a de Polignac number, because 20730435 - 2¹ = 20730433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20730433) by changing a digit.

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, 62655 + ... + 62984.

It is an arithmetic number, because the mean of its divisors is an integer number (2261520).

Almost surely, 2^20730435 is an apocalyptic number.

20730435 is a deficient number, since it is larger than the sum of its proper divisors (15453885).

20730435 is a wasteful number, since it uses less digits than its factorization.

20730435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125658.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 20730435 is about 4553.0687453628. The cubic root of 20730435 is about 274.7068391051.

The spelling of 20730435 in words is "twenty million, seven hundred thirty thousand, four hundred thirty-five".