72384646 has 8 divisors (see below), whose sum is σ = 108732240. Its totient is φ = 36140568.

The previous prime is 72384643. The next prime is 72384673. The reversal of 72384646 is 64648327.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 72384599 and 72384608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72384643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24106 + ... + 26941.

It is an arithmetic number, because the mean of its divisors is an integer number (13591530).

Almost surely, 2^72384646 is an apocalyptic number.

72384646 is a deficient number, since it is larger than the sum of its proper divisors (36347594).

72384646 is a wasteful number, since it uses less digits than its factorization.

72384646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51758.

The product of its digits is 193536, while the sum is 40.

The square root of 72384646 is about 8507.9166662586. The cubic root of 72384646 is about 416.7562788236.

The spelling of 72384646 in words is "seventy-two million, three hundred eighty-four thousand, six hundred forty-six".