6478378272 has 96 divisors (see below), whose sum is σ = 18971184960. Its totient is φ = 2150784000.

The previous prime is 6478378261. The next prime is 6478378273. The reversal of 6478378272 is 2728738746.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6478378273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201928 + ... + 231800.

It is an arithmetic number, because the mean of its divisors is an integer number (197616510).

Almost surely, 2^6478378272 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 6478378272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9485592480).

6478378272 is an abundant number, since it is smaller than the sum of its proper divisors (12492806688).

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

6478378272 is a wasteful number, since it uses less digits than its factorization.

6478378272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30143 (or 30129 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 54.

The square root of 6478378272 is about 80488.3735206520. The cubic root of 6478378272 is about 1864.1839632517.

The spelling of 6478378272 in words is "six billion, four hundred seventy-eight million, three hundred seventy-eight thousand, two hundred seventy-two".