7934940 has 72 divisors (see below), whose sum is σ = 25928448. Its totient is φ = 1952640.

The previous prime is 7934929. The next prime is 7934957. The reversal of 7934940 is 494397.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7934895 and 7934904.

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 23 ways as a sum of consecutive naturals, for example, 645 + ... + 4035.

Almost surely, 2^7934940 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 7934940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12964224).

7934940 is an abundant number, since it is smaller than the sum of its proper divisors (17993508).

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

7934940 is a wasteful number, since it uses less digits than its factorization.

7934940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419 (or 3414 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 7934940 is about 2816.9025542251. The cubic root of 7934940 is about 199.4563569334.

The spelling of 7934940 in words is "seven million, nine hundred thirty-four thousand, nine hundred forty".