20484820434 has 32 divisors (see below), whose sum is σ = 44160629184. Its totient is φ = 6297382080.

The previous prime is 20484820423. The next prime is 20484820457. The reversal of 20484820434 is 43402848402.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 20484820392 and 20484820401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29337 + ... + 204524.

It is an arithmetic number, because the mean of its divisors is an integer number (1380019662).

Almost surely, 2^20484820434 is an apocalyptic number.

20484820434 is an abundant number, since it is smaller than the sum of its proper divisors (23675808750).

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

20484820434 is a wasteful number, since it uses less digits than its factorization.

20484820434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235002.

The product of its (nonzero) digits is 196608, while the sum is 39.

The spelling of 20484820434 in words is "twenty billion, four hundred eighty-four million, eight hundred twenty thousand, four hundred thirty-four".