73751638 has 8 divisors (see below), whose sum is σ = 110669832. Its totient is φ = 36861696.

The previous prime is 73751633. The next prime is 73751647. The reversal of 73751638 is 83615737.

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 73751638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73751633) 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, 1581 + ... + 12247.

It is an arithmetic number, because the mean of its divisors is an integer number (13833729).

Almost surely, 2^73751638 is an apocalyptic number.

73751638 is a deficient number, since it is larger than the sum of its proper divisors (36918194).

73751638 is a wasteful number, since it uses less digits than its factorization.

73751638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14126.

The product of its digits is 105840, while the sum is 40.

The square root of 73751638 is about 8587.8773861764. The cubic root of 73751638 is about 419.3634309913.

The spelling of 73751638 in words is "seventy-three million, seven hundred fifty-one thousand, six hundred thirty-eight".