7916440 has 64 divisors (see below), whose sum is σ = 20808000. Its totient is φ = 2709504.

The previous prime is 7916423. The next prime is 7916459. The reversal of 7916440 is 446197.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13432 + ... + 14008.

It is an arithmetic number, because the mean of its divisors is an integer number (325125).

Almost surely, 2^7916440 is an apocalyptic number.

7916440 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 7916440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10404000).

7916440 is an abundant number, since it is smaller than the sum of its proper divisors (12891560).

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

7916440 is a wasteful number, since it uses less digits than its factorization.

7916440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 7916440 is about 2813.6168893437. The cubic root of 7916440 is about 199.3012280991.

The spelling of 7916440 in words is "seven million, nine hundred sixteen thousand, four hundred forty".