7994140 has 96 divisors (see below), whose sum is σ = 21772800. Its totient is φ = 2392320.

The previous prime is 7994137. The next prime is 7994153. The reversal of 7994140 is 414997.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7994096 and 7994105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44571 + ... + 44749.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

Almost surely, 2^7994140 is an apocalyptic number.

7994140 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 7994140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10886400).

7994140 is an abundant number, since it is smaller than the sum of its proper divisors (13778660).

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

7994140 is a wasteful number, since it uses less digits than its factorization.

7994140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 7994140 is about 2827.3910235410. The cubic root of 7994140 is about 199.9511547383.

The spelling of 7994140 in words is "seven million, nine hundred ninety-four thousand, one hundred forty".