20530434 has 16 divisors (see below), whose sum is σ = 42477120. Its totient is φ = 6607440.

The previous prime is 20530427. The next prime is 20530453. The reversal of 20530434 is 43403502.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20530434.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58822 + ... + 59169.

It is an arithmetic number, because the mean of its divisors is an integer number (2654820).

Almost surely, 2^20530434 is an apocalyptic number.

20530434 is an abundant number, since it is smaller than the sum of its proper divisors (21946686).

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

20530434 is a wasteful number, since it uses less digits than its factorization.

20530434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118025.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20530434 is about 4531.0521956826. The cubic root of 20530434 is about 273.8205531124.

Adding to 20530434 its reverse (43403502), we get a palindrome (63933936).

The spelling of 20530434 in words is "twenty million, five hundred thirty thousand, four hundred thirty-four".