6390480 has 40 divisors (see below), whose sum is σ = 19811232. Its totient is φ = 1704064.

The previous prime is 6390463. The next prime is 6390499. The reversal of 6390480 is 840936.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13074 + ... + 13553.

Almost surely, 2^6390480 is an apocalyptic number.

6390480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6390480 is an abundant number, since it is smaller than the sum of its proper divisors (13420752).

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

6390480 is a wasteful number, since it uses less digits than its factorization.

6390480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26643 (or 26637 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 6390480 is about 2527.9398727027. The cubic root of 6390480 is about 185.5714494827.

The spelling of 6390480 in words is "six million, three hundred ninety thousand, four hundred eighty".