7445144 has 16 divisors (see below), whose sum is σ = 15954000. Its totient is φ = 3190752.

The previous prime is 7445047. The next prime is 7445159. The reversal of 7445144 is 4415447.

It is a happy number.

7445144 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66419 + ... + 66530.

It is an arithmetic number, because the mean of its divisors is an integer number (997125).

Almost surely, 2^7445144 is an apocalyptic number.

It is an amenable number.

7445144 is an abundant number, since it is smaller than the sum of its proper divisors (8508856).

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

7445144 is a wasteful number, since it uses less digits than its factorization.

7445144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132962 (or 132958 counting only the distinct ones).

The product of its digits is 8960, while the sum is 29.

The square root of 7445144 is about 2728.5791174162. The cubic root of 7445144 is about 195.2649827317.

The spelling of 7445144 in words is "seven million, four hundred forty-five thousand, one hundred forty-four".