6264840 has 128 divisors (see below), whose sum is σ = 20684160. Its totient is φ = 1511424.

The previous prime is 6264829. The next prime is 6264859. The reversal of 6264840 is 484626.

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

It is a junction number, because it is equal to n+sod(n) for n = 6264798 and 6264807.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75439 + ... + 75521.

It is an arithmetic number, because the mean of its divisors is an integer number (161595).

Almost surely, 2^6264840 is an apocalyptic number.

6264840 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 6264840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10342080).

6264840 is an abundant number, since it is smaller than the sum of its proper divisors (14419320).

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

6264840 is a wasteful number, since it uses less digits than its factorization.

6264840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 6264840 is about 2502.9662402837. The cubic root of 6264840 is about 184.3472491030.

The spelling of 6264840 in words is "six million, two hundred sixty-four thousand, eight hundred forty".