7448728 has 16 divisors (see below), whose sum is σ = 15961680. Its totient is φ = 3192288.

The previous prime is 7448723. The next prime is 7448743. The reversal of 7448728 is 8278447.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7448723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66451 + ... + 66562.

It is an arithmetic number, because the mean of its divisors is an integer number (997605).

Almost surely, 2^7448728 is an apocalyptic number.

It is an amenable number.

7448728 is an abundant number, since it is smaller than the sum of its proper divisors (8512952).

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

7448728 is a wasteful number, since it uses less digits than its factorization.

7448728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133026 (or 133022 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 7448728 is about 2729.2357904732. The cubic root of 7448728 is about 195.2963104191.

The spelling of 7448728 in words is "seven million, four hundred forty-eight thousand, seven hundred twenty-eight".