7896440 has 32 divisors (see below), whose sum is σ = 17934480. Its totient is φ = 3128832.

The previous prime is 7896437. The next prime is 7896443. The reversal of 7896440 is 446987.

7896440 = 695² + 696² + ... + 710².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7896437) and next prime (7896443).

It is a junction number, because it is equal to n+sod(n) for n = 7896394 and 7896403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7896443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3647 + ... + 5393.

Almost surely, 2^7896440 is an apocalyptic number.

It is an amenable number.

7896440 is an abundant number, since it is smaller than the sum of its proper divisors (10038040).

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

7896440 is a wasteful number, since it uses less digits than its factorization.

7896440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871 (or 1867 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 7896440 is about 2810.0604975694. The cubic root of 7896440 is about 199.1332491410.

The spelling of 7896440 in words is "seven million, eight hundred ninety-six thousand, four hundred forty".