7445724 has 48 divisors (see below), whose sum is σ = 20415360. Its totient is φ = 2082240.

The previous prime is 7445719. The next prime is 7445729. The reversal of 7445724 is 4275447.

It is an interprime number because it is at equal distance from previous prime (7445719) and next prime (7445729).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7445729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454 + ... + 3885.

It is an arithmetic number, because the mean of its divisors is an integer number (425320).

Almost surely, 2^7445724 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 7445724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10207680).

7445724 is an abundant number, since it is smaller than the sum of its proper divisors (12969636).

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

7445724 is a wasteful number, since it uses less digits than its factorization.

7445724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370 (or 4368 counting only the distinct ones).

The product of its digits is 31360, while the sum is 33.

The square root of 7445724 is about 2728.6853977694. The cubic root of 7445724 is about 195.2700531843.

The spelling of 7445724 in words is "seven million, four hundred forty-five thousand, seven hundred twenty-four".