20035730 has 32 divisors (see below), whose sum is σ = 42372288. Its totient is φ = 6724800.

The previous prime is 20035711. The next prime is 20035753. The reversal of 20035730 is 3753002.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

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, 5576 + ... + 8435.

It is an arithmetic number, because the mean of its divisors is an integer number (1324134).

Almost surely, 2^20035730 is an apocalyptic number.

20035730 is an abundant number, since it is smaller than the sum of its proper divisors (22336558).

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

20035730 is a wasteful number, since it uses less digits than its factorization.

20035730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14042.

The product of its (nonzero) digits is 630, while the sum is 20.

The square root of 20035730 is about 4476.1289078846. The cubic root of 20035730 is about 271.6033090652.

Adding to 20035730 its reverse (3753002), we get a palindrome (23788732).

The spelling of 20035730 in words is "twenty million, thirty-five thousand, seven hundred thirty".