875440 has 40 divisors (see below), whose sum is σ = 2107008. Its totient is φ = 337920.

The previous prime is 875429. The next prime is 875443. The reversal of 875440 is 44578.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 875399 and 875408.

It is not an unprimeable number, because it can be changed into a prime (875443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2304 + ... + 2656.

2⁸⁷⁵⁴⁴⁰ is an apocalyptic number.

875440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 875440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1053504).

875440 is an abundant number, since it is smaller than the sum of its proper divisors (1231568).

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

875440 is a wasteful number, since it uses less digits than its factorization.

875440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 875440 is about 935.6495070271. The cubic root of 875440 is about 95.6625886372.

The spelling of 875440 in words is "eight hundred seventy-five thousand, four hundred forty".