7883840 has 56 divisors (see below), whose sum is σ = 19092672. Its totient is φ = 3100160.

The previous prime is 7883839. The next prime is 7883851. The reversal of 7883840 is 483887.

It is a junction number, because it is equal to n+sod(n) for n = 7883794 and 7883803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22547 + ... + 22893.

Almost surely, 2^7883840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7883840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9546336).

7883840 is an abundant number, since it is smaller than the sum of its proper divisors (11208832).

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

7883840 is a wasteful number, since it uses less digits than its factorization.

7883840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 7883840 is about 2807.8176578973. The cubic root of 7883840 is about 199.0272767169.

The spelling of 7883840 in words is "seven million, eight hundred eighty-three thousand, eight hundred forty".