73421718 has 8 divisors (see below), whose sum is σ = 146843448. Its totient is φ = 24473904.

The previous prime is 73421669. The next prime is 73421741. The reversal of 73421718 is 81712437.

It is a happy number.

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

73421718 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6118471 + ... + 6118482.

It is an arithmetic number, because the mean of its divisors is an integer number (18355431).

Almost surely, 2^73421718 is an apocalyptic number.

73421718 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73421718 is a wasteful number, since it uses less digits than its factorization.

73421718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12236958.

The product of its digits is 9408, while the sum is 33.

The square root of 73421718 is about 8568.6473845059. The cubic root of 73421718 is about 418.7371705285.

The spelling of 73421718 in words is "seventy-three million, four hundred twenty-one thousand, seven hundred eighteen".