6478380 has 144 divisors (see below), whose sum is σ = 21525504. Its totient is φ = 1632960.

The previous prime is 6478379. The next prime is 6478421. The reversal of 6478380 is 838746.

6478380 is a `hidden beast` number, since 647 + 8 + 3 + 8 + 0 = 666.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150639 + ... + 150681.

Almost surely, 2^6478380 is an apocalyptic number.

6478380 is a gapful number since it is divisible by the number (60) 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 6478380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10762752).

6478380 is an abundant number, since it is smaller than the sum of its proper divisors (15047124).

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

6478380 is a wasteful number, since it uses less digits than its factorization.

6478380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 6478380 is about 2545.2661943302. The cubic root of 6478380 is about 186.4184128998.

Adding to 6478380 its product of nonzero digits (32256), we get a triangular number (6510636 = T₃₆₀₈).

The spelling of 6478380 in words is "six million, four hundred seventy-eight thousand, three hundred eighty".