7875040 has 48 divisors (see below), whose sum is σ = 18860688. Its totient is φ = 3106816.

The previous prime is 7875031. The next prime is 7875047. The reversal of 7875040 is 405787.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7874993 and 7875011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7875047) 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, 12984 + ... + 13576.

It is an arithmetic number, because the mean of its divisors is an integer number (392931).

Almost surely, 2^7875040 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 7875040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9430344).

7875040 is an abundant number, since it is smaller than the sum of its proper divisors (10985648).

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

7875040 is a wasteful number, since it uses less digits than its factorization.

7875040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 7875040 is about 2806.2501670379. The cubic root of 7875040 is about 198.9531972457.

The spelling of 7875040 in words is "seven million, eight hundred seventy-five thousand, forty".