7948040 has 16 divisors (see below), whose sum is σ = 17883180. Its totient is φ = 3179200.

The previous prime is 7948037. The next prime is 7948049. The reversal of 7948040 is 408497.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7409284 + 538756 = 2722^2 + 734^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7947988 and 7948006.

It is not an unprimeable number, because it can be changed into a prime (7948049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99311 + ... + 99390.

Almost surely, 2^7948040 is an apocalyptic number.

It is an amenable number.

7948040 is an abundant number, since it is smaller than the sum of its proper divisors (9935140).

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

7948040 is a wasteful number, since it uses less digits than its factorization.

7948040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198712 (or 198708 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 7948040 is about 2819.2268443671. The cubic root of 7948040 is about 199.5660591577.

The spelling of 7948040 in words is "seven million, nine hundred forty-eight thousand, forty".