72446744 has 16 divisors (see below), whose sum is σ = 138997320. Its totient is φ = 35380800.

The previous prime is 72446743. The next prime is 72446747. The reversal of 72446744 is 44764427.

It is a junction number, because it is equal to n+sod(n) for n = 72446698 and 72446707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72446743) by changing a digit.

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, 104957 + ... + 105644.

Almost surely, 2^72446744 is an apocalyptic number.

It is an amenable number.

72446744 is a deficient number, since it is larger than the sum of its proper divisors (66550576).

72446744 is a wasteful number, since it uses less digits than its factorization.

72446744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210650 (or 210646 counting only the distinct ones).

The product of its digits is 150528, while the sum is 38.

The square root of 72446744 is about 8511.5653084494. The cubic root of 72446744 is about 416.8754216516.

The spelling of 72446744 in words is "seventy-two million, four hundred forty-six thousand, seven hundred forty-four".