73008728 has 16 divisors (see below), whose sum is σ = 147421680. Its totient is φ = 33696288.

The previous prime is 73008721. The next prime is 73008731. The reversal of 73008728 is 82780037.

It is a happy number.

It is a super-3 number, since 3×73008728³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73008721) 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, 350900 + ... + 351107.

It is an arithmetic number, because the mean of its divisors is an integer number (9213855).

Almost surely, 2^73008728 is an apocalyptic number.

It is an amenable number.

73008728 is an abundant number, since it is smaller than the sum of its proper divisors (74412952).

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

73008728 is a wasteful number, since it uses less digits than its factorization.

73008728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702026 (or 702022 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 73008728 is about 8544.5144976178. The cubic root of 73008728 is about 417.9505752632.

The spelling of 73008728 in words is "seventy-three million, eight thousand, seven hundred twenty-eight".