72944385 has 16 divisors (see below), whose sum is σ = 121785984. Its totient is φ = 37212032.

The previous prime is 72944369. The next prime is 72944387. The reversal of 72944385 is 58344927.

It is a cyclic number.

It is not a de Polignac number, because 72944385 - 2⁴ = 72944369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72944387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105372 + ... + 106061.

It is an arithmetic number, because the mean of its divisors is an integer number (7611624).

Almost surely, 2^72944385 is an apocalyptic number.

It is an amenable number.

72944385 is a deficient number, since it is larger than the sum of its proper divisors (48841599).

72944385 is a wasteful number, since it uses less digits than its factorization.

72944385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211464.

The product of its digits is 241920, while the sum is 42.

The square root of 72944385 is about 8540.7485034978. The cubic root of 72944385 is about 417.8277584505.

The spelling of 72944385 in words is "seventy-two million, nine hundred forty-four thousand, three hundred eighty-five".