7716240 has 120 divisors (see below), whose sum is σ = 29635008. Its totient is φ = 1762560.

The previous prime is 7716229. The next prime is 7716271. The reversal of 7716240 is 426177.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam 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, 4275 + ... + 5805.

Almost surely, 2^7716240 is an apocalyptic number.

7716240 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 7716240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14817504).

7716240 is an abundant number, since it is smaller than the sum of its proper divisors (21918768).

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

7716240 is a wasteful number, since it uses less digits than its factorization.

7716240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 7716240 is about 2777.8120886770. The cubic root of 7716240 is about 197.6068107822.

The spelling of 7716240 in words is "seven million, seven hundred sixteen thousand, two hundred forty".