8042440028 has 48 divisors (see below), whose sum is σ = 16578584064. Its totient is φ = 3341632320.

The previous prime is 8042439997. The next prime is 8042440031. The reversal of 8042440028 is 8200442408.

It is a junction number, because it is equal to n+sod(n) for n = 8042439976 and 8042440003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279473 + ... + 306903.

It is an arithmetic number, because the mean of its divisors is an integer number (345387168).

Almost surely, 2^8042440028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8042440028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8289292032).

8042440028 is an abundant number, since it is smaller than the sum of its proper divisors (8536144036).

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

8042440028 is a wasteful number, since it uses less digits than its factorization.

8042440028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27762 (or 27760 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 8042440028 is about 89679.6522517789. The cubic root of 8042440028 is about 2003.5304333532.

The spelling of 8042440028 in words is "eight billion, forty-two million, four hundred forty thousand, twenty-eight".