72993446 has 8 divisors (see below), whose sum is σ = 112036584. Its totient is φ = 35647920.

The previous prime is 72993433. The next prime is 72993451. The reversal of 72993446 is 64439927.

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 = 72993397 and 72993406.

It is a congruent number.

It is an unprimeable number.

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, 424295 + ... + 424466.

It is an arithmetic number, because the mean of its divisors is an integer number (14004573).

Almost surely, 2^72993446 is an apocalyptic number.

72993446 is a deficient number, since it is larger than the sum of its proper divisors (39043138).

72993446 is a wasteful number, since it uses less digits than its factorization.

72993446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848806.

The product of its digits is 326592, while the sum is 44.

The square root of 72993446 is about 8543.6201928691. The cubic root of 72993446 is about 417.9214117802.

The spelling of 72993446 in words is "seventy-two million, nine hundred ninety-three thousand, four hundred forty-six".