7985040 has 160 divisors (see below), whose sum is σ = 29164800. Its totient is φ = 1806336.

The previous prime is 7985039. The next prime is 7985041. The reversal of 7985040 is 405897.

It is an interprime number because it is at equal distance from previous prime (7985039) and next prime (7985041).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7984992 and 7985010.

It is not an unprimeable number, because it can be changed into a prime (7985041) by changing a digit.

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, 82272 + ... + 82368.

It is an arithmetic number, because the mean of its divisors is an integer number (182280).

Almost surely, 2^7985040 is an apocalyptic number.

7985040 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 7985040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14582400).

7985040 is an abundant number, since it is smaller than the sum of its proper divisors (21179760).

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

7985040 is a wasteful number, since it uses less digits than its factorization.

7985040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 7985040 is about 2825.7813078864. The cubic root of 7985040 is about 199.8752555436.

The spelling of 7985040 in words is "seven million, nine hundred eighty-five thousand, forty".