7886340 has 144 divisors (see below), whose sum is σ = 29877120. Its totient is φ = 1635840.

The previous prime is 7886323. The next prime is 7886341. The reversal of 7886340 is 436887.

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

It is a junction number, because it is equal to n+sod(n) for n = 7886295 and 7886304.

It is not an unprimeable number, because it can be changed into a prime (7886341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13576 + ... + 14144.

It is an arithmetic number, because the mean of its divisors is an integer number (207480).

Almost surely, 2^7886340 is an apocalyptic number.

7886340 is a gapful number since it is divisible by the number (70) 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 7886340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14938560).

7886340 is an abundant number, since it is smaller than the sum of its proper divisors (21990780).

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

7886340 is a wasteful number, since it uses less digits than its factorization.

7886340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 597 counting only the distinct ones).

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

The square root of 7886340 is about 2808.2628082144. The cubic root of 7886340 is about 199.0483119657.

Adding to 7886340 its product of nonzero digits (32256), we get a square (7918596 = 2814²).

The spelling of 7886340 in words is "seven million, eight hundred eighty-six thousand, three hundred forty".