6424490820 has 96 divisors (see below), whose sum is σ = 19818400896. Its totient is φ = 1542016000.

The previous prime is 6424490803. The next prime is 6424490867. The reversal of 6424490820 is 280944246.

It is a super-3 number, since 3×6424490820³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18472 + ... + 114848.

It is an arithmetic number, because the mean of its divisors is an integer number (206441676).

Almost surely, 2^6424490820 is an apocalyptic number.

6424490820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6424490820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9909200448).

6424490820 is an abundant number, since it is smaller than the sum of its proper divisors (13393910076).

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

6424490820 is a wasteful number, since it uses less digits than its factorization.

6424490820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96501 (or 96499 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 6424490820 is about 80152.9214689022. The cubic root of 6424490820 is about 1859.0007755858. Note that the first 3 decimals are identical.

The spelling of 6424490820 in words is "six billion, four hundred twenty-four million, four hundred ninety thousand, eight hundred twenty".