7880740 has 48 divisors (see below), whose sum is σ = 19079424. Its totient is φ = 2678400.

The previous prime is 7880737. The next prime is 7880749. The reversal of 7880740 is 470887.

It is a junction number, because it is equal to n+sod(n) for n = 7880696 and 7880705.

It is not an unprimeable number, because it can be changed into a prime (7880749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25185 + ... + 25495.

It is an arithmetic number, because the mean of its divisors is an integer number (397488).

Almost surely, 2^7880740 is an apocalyptic number.

7880740 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 7880740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9539712).

7880740 is an abundant number, since it is smaller than the sum of its proper divisors (11198684).

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

7880740 is a wasteful number, since it uses less digits than its factorization.

7880740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 7880740 is about 2807.2655734718. The cubic root of 7880740 is about 199.0011868316.

The spelling of 7880740 in words is "seven million, eight hundred eighty thousand, seven hundred forty".