7534720 has 64 divisors (see below), whose sum is σ = 18402840. Its totient is φ = 2949120.

The previous prime is 7534699. The next prime is 7534721. The reversal of 7534720 is 274357.

7534720 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2903616 + 4631104 = 1704^2 + 2152^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7534721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38944 + ... + 39136.

Almost surely, 2^7534720 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 7534720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9201420).

7534720 is an abundant number, since it is smaller than the sum of its proper divisors (10868120).

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

7534720 is a wasteful number, since it uses less digits than its factorization.

7534720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 7534720 is about 2744.9444438822. The cubic root of 7534720 is about 196.0449709387.

The spelling of 7534720 in words is "seven million, five hundred thirty-four thousand, seven hundred twenty".