7275744 has 120 divisors (see below), whose sum is σ = 24515568. Its totient is φ = 2073600.

The previous prime is 7275743. The next prime is 7275757. The reversal of 7275744 is 4475727.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 7⁴ + 2¹¹ + 7⁶ + 5⁷ + 7⁸ + 4⁹ + 4¹⁰ .

It is a junction number, because it is equal to n+sod(n) for n = 7275699 and 7275708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7275743) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17944 + ... + 18344.

Almost surely, 2^7275744 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 7275744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12257784).

7275744 is an abundant number, since it is smaller than the sum of its proper divisors (17239824).

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

7275744 is a wasteful number, since it uses less digits than its factorization.

7275744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 413 counting only the distinct ones).

The product of its digits is 54880, while the sum is 36.

The square root of 7275744 is about 2697.3587080698. The cubic root of 7275744 is about 193.7726461216.

The spelling of 7275744 in words is "seven million, two hundred seventy-five thousand, seven hundred forty-four".