73308728 has 16 divisors (see below), whose sum is σ = 143430480. Its totient is φ = 35060608.

The previous prime is 73308667. The next prime is 73308731. The reversal of 73308728 is 82780337.

It is a junction number, because it is equal to n+sod(n) for n = 73308691 and 73308700.

It is a congruent number.

It is an unprimeable number.

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, 199025 + ... + 199392.

It is an arithmetic number, because the mean of its divisors is an integer number (8964405).

Almost surely, 2^73308728 is an apocalyptic number.

It is an amenable number.

73308728 is a deficient number, since it is larger than the sum of its proper divisors (70121752).

73308728 is a wasteful number, since it uses less digits than its factorization.

73308728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398446 (or 398442 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 73308728 is about 8562.0516232968. The cubic root of 73308728 is about 418.5222595308.

The spelling of 73308728 in words is "seventy-three million, three hundred eight thousand, seven hundred twenty-eight".