73709447828 has 12 divisors (see below), whose sum is σ = 131736034752. Its totient is φ = 36070580760.

The previous prime is 73709447809. The next prime is 73709447839. The reversal of 73709447828 is 82874490737.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196035578 + ... + 196035953.

It is an arithmetic number, because the mean of its divisors is an integer number (10978002896).

Almost surely, 2^73709447828 is an apocalyptic number.

It is an amenable number.

73709447828 is a deficient number, since it is larger than the sum of its proper divisors (58026586924).

73709447828 is a wasteful number, since it uses less digits than its factorization.

73709447828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392071582 (or 392071580 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 59.

The spelling of 73709447828 in words is "seventy-three billion, seven hundred nine million, four hundred forty-seven thousand, eight hundred twenty-eight".