6398734020 has 48 divisors (see below), whose sum is σ = 20475950208. Its totient is φ = 1462567680.

The previous prime is 6398733997. The next prime is 6398734061. The reversal of 6398734020 is 204378936.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 7617121 + ... + 7617960.

It is an arithmetic number, because the mean of its divisors is an integer number (426582296).

Almost surely, 2^6398734020 is an apocalyptic number.

6398734020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6398734020 is an abundant number, since it is smaller than the sum of its proper divisors (14077216188).

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

6398734020 is a wasteful number, since it uses less digits than its factorization.

6398734020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15235100 (or 15235098 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 6398734020 is about 79992.0872336758. The cubic root of 6398734020 is about 1856.5131054008.

The spelling of 6398734020 in words is "six billion, three hundred ninety-eight million, seven hundred thirty-four thousand, twenty".