8020533642 has 48 divisors (see below), whose sum is σ = 18398560320. Its totient is φ = 2324787520.

The previous prime is 8020533637. The next prime is 8020533709. The reversal of 8020533642 is 2463350208.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 23 ways as a sum of consecutive naturals, for example, 223467 + ... + 256862.

It is an arithmetic number, because the mean of its divisors is an integer number (383303340).

Almost surely, 2^8020533642 is an apocalyptic number.

8020533642 is an abundant number, since it is smaller than the sum of its proper divisors (10378026678).

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

8020533642 is a wasteful number, since it uses less digits than its factorization.

8020533642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480379 (or 480368 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 8020533642 is about 89557.4320869016. The cubic root of 8020533642 is about 2001.7096749227.

The spelling of 8020533642 in words is "eight billion, twenty million, five hundred thirty-three thousand, six hundred forty-two".