73743720 has 32 divisors (see below), whose sum is σ = 221231520. Its totient is φ = 19664960.

The previous prime is 73743713. The next prime is 73743721. The reversal of 73743720 is 2734737.

It is not an unprimeable number, because it can be changed into a prime (73743721) 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 7 ways as a sum of consecutive naturals, for example, 307146 + ... + 307385.

It is an arithmetic number, because the mean of its divisors is an integer number (6913485).

Almost surely, 2^73743720 is an apocalyptic number.

It is an amenable number.

73743720 is an abundant number, since it is smaller than the sum of its proper divisors (147487800).

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

73743720 is a wasteful number, since it uses less digits than its factorization.

73743720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614545 (or 614541 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 33.

The square root of 73743720 is about 8587.4163751387. The cubic root of 73743720 is about 419.3484227892.

The spelling of 73743720 in words is "seventy-three million, seven hundred forty-three thousand, seven hundred twenty".