8428420080 has 120 divisors (see below), whose sum is σ = 28333775808. Its totient is φ = 2245329408.

The previous prime is 8428420079. The next prime is 8428420087. The reversal of 8428420080 is 800248248.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8428420087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 788854 + ... + 799466.

Almost surely, 2^8428420080 is an apocalyptic number.

8428420080 is a gapful number since it is divisible by the number (80) 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 8428420080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14166887904).

8428420080 is an abundant number, since it is smaller than the sum of its proper divisors (19905355728).

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

8428420080 is a wasteful number, since it uses less digits than its factorization.

8428420080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11735 (or 11726 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 8428420080 is about 91806.4272259846. The cubic root of 8428420080 is about 2035.0826778926.

The spelling of 8428420080 in words is "eight billion, four hundred twenty-eight million, four hundred twenty thousand, eighty".