7870720 has 144 divisors (see below), whose sum is σ = 22663872. Its totient is φ = 2580480.

The previous prime is 7870717. The next prime is 7870721. The reversal of 7870720 is 270787.

7870720 = T₄₅₅ + T₄₅₆ + ... + T₅₂₀.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7870721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183019 + ... + 183061.

It is an arithmetic number, because the mean of its divisors is an integer number (157388).

Almost surely, 2^7870720 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 7870720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11331936).

7870720 is an abundant number, since it is smaller than the sum of its proper divisors (14793152).

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

7870720 is a wasteful number, since it uses less digits than its factorization.

7870720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 7870720 is about 2805.4803510273. The cubic root of 7870720 is about 198.9168107629.

The spelling of 7870720 in words is "seven million, eight hundred seventy thousand, seven hundred twenty".