7870140 has 72 divisors (see below), whose sum is σ = 24923808. Its totient is φ = 2006400.

The previous prime is 7870139. The next prime is 7870141. The reversal of 7870140 is 410787.

7870140 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7870139) and next prime (7870141).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7870141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3190 + ... + 5090.

It is an arithmetic number, because the mean of its divisors is an integer number (346164).

Almost surely, 2^7870140 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 7870140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12461904).

7870140 is an abundant number, since it is smaller than the sum of its proper divisors (17053668).

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

7870140 is a wasteful number, since it uses less digits than its factorization.

7870140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 7870140 is about 2805.3769800153. The cubic root of 7870140 is about 198.9119245270.

The spelling of 7870140 in words is "seven million, eight hundred seventy thousand, one hundred forty".