7978760 has 32 divisors (see below), whose sum is σ = 18071640. Its totient is φ = 3170304.

The previous prime is 7978757. The next prime is 7978771. The reversal of 7978760 is 678797.

It can be written as a sum of positive squares in 4 ways, for example, as 7941124 + 37636 = 2818^2 + 194^2 .

It is a super-2 number, since 2×7978760² = 127321222275200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6344 + ... + 7496.

Almost surely, 2^7978760 is an apocalyptic number.

It is an amenable number.

7978760 is an abundant number, since it is smaller than the sum of its proper divisors (10092880).

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

7978760 is a wasteful number, since it uses less digits than its factorization.

7978760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1333 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 7978760 is about 2824.6698922175. The cubic root of 7978760 is about 199.8228431235.

The spelling of 7978760 in words is "seven million, nine hundred seventy-eight thousand, seven hundred sixty".