72445841 has 24 divisors (see below), whose sum is σ = 84490560. Its totient is φ = 61707744.

The previous prime is 72445829. The next prime is 72445843. The reversal of 72445841 is 14854427.

It is not a de Polignac number, because 72445841 - 2⁶ = 72445777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72445843) 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 23 ways as a sum of consecutive naturals, for example, 201620 + ... + 201978.

It is an arithmetic number, because the mean of its divisors is an integer number (3520440).

Almost surely, 2^72445841 is an apocalyptic number.

It is an amenable number.

72445841 is a deficient number, since it is larger than the sum of its proper divisors (12044719).

72445841 is a wasteful number, since it uses less digits than its factorization.

72445841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 434 counting only the distinct ones).

The product of its digits is 35840, while the sum is 35.

The square root of 72445841 is about 8511.5122628121. The cubic root of 72445841 is about 416.8736896203.

It can be divided in two parts, 724458 and 41, that multiplied together give a triangular number (29702778 = T₇₇₀₇).

The spelling of 72445841 in words is "seventy-two million, four hundred forty-five thousand, eight hundred forty-one".