72444842 has 8 divisors (see below), whose sum is σ = 112414500. Its totient is φ = 34973344.

The previous prime is 72444829. The next prime is 72444847. The reversal of 72444842 is 24844427.

It can be written as a sum of positive squares in 2 ways, for example, as 70543201 + 1901641 = 8399^2 + 1379^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (72444847) 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 3 ways as a sum of consecutive naturals, for example, 624467 + ... + 624582.

Almost surely, 2^72444842 is an apocalyptic number.

72444842 is a deficient number, since it is larger than the sum of its proper divisors (39969658).

72444842 is a wasteful number, since it uses less digits than its factorization.

72444842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249080.

The product of its digits is 57344, while the sum is 35.

The square root of 72444842 is about 8511.4535773862. The cubic root of 72444842 is about 416.8717734361.

The spelling of 72444842 in words is "seventy-two million, four hundred forty-four thousand, eight hundred forty-two".