7056840 has 128 divisors (see below), whose sum is σ = 25067520. Its totient is φ = 1555200.

The previous prime is 7056827. The next prime is 7056851. The reversal of 7056840 is 486507.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 7056798 and 7056807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25905 + ... + 26175.

It is an arithmetic number, because the mean of its divisors is an integer number (195840).

Almost surely, 2^7056840 is an apocalyptic number.

7056840 is a gapful number since it is divisible by the number (70) 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 7056840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12533760).

7056840 is an abundant number, since it is smaller than the sum of its proper divisors (18010680).

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

7056840 is a wasteful number, since it uses less digits than its factorization.

7056840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 7056840 is about 2656.4713437190. The cubic root of 7056840 is about 191.8094898501.

The spelling of 7056840 in words is "seven million, fifty-six thousand, eight hundred forty".