6372840 has 64 divisors (see below), whose sum is σ = 19958400. Its totient is φ = 1624832.

The previous prime is 6372781. The next prime is 6372869. The reversal of 6372840 is 482736.

6372840 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×6372840² = 81226179331200, which contains 22 as substring.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6372798 and 6372807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1606 + ... + 3914.

It is an arithmetic number, because the mean of its divisors is an integer number (311850).

Almost surely, 2^6372840 is an apocalyptic number.

6372840 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 6372840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9979200).

6372840 is an abundant number, since it is smaller than the sum of its proper divisors (13585560).

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

6372840 is a wasteful number, since it uses less digits than its factorization.

6372840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346 (or 2342 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 6372840 is about 2524.4484546134. The cubic root of 6372840 is about 185.4005443766.

The spelling of 6372840 in words is "six million, three hundred seventy-two thousand, eight hundred forty".