6819078240 has 144 divisors (see below), whose sum is σ = 25060181328. Its totient is φ = 1678537728.

The previous prime is 6819078239. The next prime is 6819078251. The reversal of 6819078240 is 428709186.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163414 + ... + 200853.

It is an arithmetic number, because the mean of its divisors is an integer number (174029037).

Almost surely, 2^6819078240 is an apocalyptic number.

6819078240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6819078240 is an abundant number, since it is smaller than the sum of its proper divisors (18241103088).

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

6819078240 is a wasteful number, since it uses less digits than its factorization.

6819078240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364301 (or 364290 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 6819078240 is about 82577.7103097440. The cubic root of 6819078240 is about 1896.3066053321.

The spelling of 6819078240 in words is "six billion, eight hundred nineteen million, seventy-eight thousand, two hundred forty".