6381040 has 60 divisors (see below), whose sum is σ = 15514632. Its totient is φ = 2440320.

The previous prime is 6381031. The next prime is 6381047. The reversal of 6381040 is 401836.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76839 + ... + 76921.

Almost surely, 2^6381040 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 6381040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7757316).

6381040 is an abundant number, since it is smaller than the sum of its proper divisors (9133592).

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

6381040 is a wasteful number, since it uses less digits than its factorization.

6381040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 6381040 is about 2526.0720496455. The cubic root of 6381040 is about 185.4800292360.

Adding to 6381040 its reverse (401836), we get a palindrome (6782876).

The spelling of 6381040 in words is "six million, three hundred eighty-one thousand, forty".