7078449840 has 320 divisors, whose sum is σ = 27919641600. Its totient is φ = 1470658560.

The previous prime is 7078449839. The next prime is 7078449841. The reversal of 7078449840 is 489448707.

It is an interprime number because it is at equal distance from previous prime (7078449839) and next prime (7078449841).

It is not an unprimeable number, because it can be changed into a prime (7078449841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 901612 + ... + 909428.

It is an arithmetic number, because the mean of its divisors is an integer number (87248880).

Almost surely, 2^7078449840 is an apocalyptic number.

7078449840 is a gapful number since it is divisible by the number (70) 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 7078449840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13959820800).

7078449840 is an abundant number, since it is smaller than the sum of its proper divisors (20841191760).

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

7078449840 is a wasteful number, since it uses less digits than its factorization.

7078449840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7865 (or 7845 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The square root of 7078449840 is about 84133.5238772274. The cubic root of 7078449840 is about 1920.0508016072.

The spelling of 7078449840 in words is "seven billion, seventy-eight million, four hundred forty-nine thousand, eight hundred forty".