73683728 has 20 divisors (see below), whose sum is σ = 144151488. Its totient is φ = 36483360.

The previous prime is 73683721. The next prime is 73683737. The reversal of 73683728 is 82738637.

It is not an unprimeable number, because it can be changed into a prime (73683721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20708 + ... + 24003.

Almost surely, 2^73683728 is an apocalyptic number.

It is an amenable number.

73683728 is a deficient number, since it is larger than the sum of its proper divisors (70467760).

73683728 is a wasteful number, since it uses less digits than its factorization.

73683728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44822 (or 44816 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 73683728 is about 8583.9226464362. The cubic root of 73683728 is about 419.2346758119.

The spelling of 73683728 in words is "seventy-three million, six hundred eighty-three thousand, seven hundred twenty-eight".