73447378 has 8 divisors (see below), whose sum is σ = 116651772. Its totient is φ = 34563456.

The previous prime is 73447357. The next prime is 73447379. The reversal of 73447378 is 87374437.

It can be written as a sum of positive squares in 2 ways, for example, as 72880369 + 567009 = 8537^2 + 753^2 .

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

It is not an unprimeable number, because it can be changed into a prime (73447379) by changing a digit.

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, 1080075 + ... + 1080142.

Almost surely, 2^73447378 is an apocalyptic number.

73447378 is a deficient number, since it is larger than the sum of its proper divisors (43204394).

73447378 is a wasteful number, since it uses less digits than its factorization.

73447378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160236.

The product of its digits is 395136, while the sum is 43.

The square root of 73447378 is about 8570.1445728762. The cubic root of 73447378 is about 418.7859460343.

The spelling of 73447378 in words is "seventy-three million, four hundred forty-seven thousand, three hundred seventy-eight".