72441145 has 16 divisors (see below), whose sum is σ = 103668480. Its totient is φ = 47513664.

The previous prime is 72441119. The next prime is 72441151. The reversal of 72441145 is 54114427.

It is a cyclic number.

It is not a de Polignac number, because 72441145 - 2⁵ = 72441113 is a prime.

It is a super-2 number, since 2×72441145² = 10495438977822050, which contains 22 as substring.

It is an unprimeable number.

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, 44190 + ... + 45799.

It is an arithmetic number, because the mean of its divisors is an integer number (6479280).

Almost surely, 2^72441145 is an apocalyptic number.

It is an amenable number.

72441145 is a deficient number, since it is larger than the sum of its proper divisors (31227335).

72441145 is a wasteful number, since it uses less digits than its factorization.

72441145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90024.

The product of its digits is 4480, while the sum is 28.

The square root of 72441145 is about 8511.2363966700. The cubic root of 72441145 is about 416.8646820586.

The spelling of 72441145 in words is "seventy-two million, four hundred forty-one thousand, one hundred forty-five".