72449426 has 8 divisors (see below), whose sum is σ = 124199040. Its totient is φ = 31049748.

The previous prime is 72449407. The next prime is 72449437. The reversal of 72449426 is 62494427.

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

It is a self number, because there is not a number n which added to its sum of digits gives 72449426.

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, 2587466 + ... + 2587493.

It is an arithmetic number, because the mean of its divisors is an integer number (15524880).

Almost surely, 2^72449426 is an apocalyptic number.

72449426 is a deficient number, since it is larger than the sum of its proper divisors (51749614).

72449426 is a wasteful number, since it uses less digits than its factorization.

72449426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5174968.

The product of its digits is 96768, while the sum is 38.

The square root of 72449426 is about 8511.7228573304. The cubic root of 72449426 is about 416.8805658721.

The spelling of 72449426 in words is "seventy-two million, four hundred forty-nine thousand, four hundred twenty-six".