7725744 has 60 divisors (see below), whose sum is σ = 23290176. Its totient is φ = 2376576.

The previous prime is 7725733. The next prime is 7725787. The reversal of 7725744 is 4475277.

It is a happy number.

7725744 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 7725699 and 7725708.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192 + ... + 3935.

Almost surely, 2^7725744 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 7725744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11645088).

7725744 is an abundant number, since it is smaller than the sum of its proper divisors (15564432).

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

7725744 is a wasteful number, since it uses less digits than its factorization.

7725744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154 (or 4145 counting only the distinct ones).

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

The square root of 7725744 is about 2779.5222611089. The cubic root of 7725744 is about 197.6879074734.

The spelling of 7725744 in words is "seven million, seven hundred twenty-five thousand, seven hundred forty-four".