7487740 has 48 divisors (see below), whose sum is σ = 17498880. Its totient is φ = 2672640.

The previous prime is 7487737. The next prime is 7487741. The reversal of 7487740 is 477847.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 7487740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7487741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7596 + ... + 8524.

It is an arithmetic number, because the mean of its divisors is an integer number (364560).

Almost surely, 2^7487740 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 7487740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8749440).

7487740 is an abundant number, since it is smaller than the sum of its proper divisors (10011140).

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

7487740 is a wasteful number, since it uses less digits than its factorization.

7487740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 7487740 is about 2736.3735125162. The cubic root of 7487740 is about 195.6366654947.

The spelling of 7487740 in words is "seven million, four hundred eighty-seven thousand, seven hundred forty".