73720168 has 16 divisors (see below), whose sum is σ = 138586500. Its totient is φ = 36763776.

The previous prime is 73720159. The next prime is 73720187. The reversal of 73720168 is 86102737.

It can be written as a sum of positive squares in 2 ways, for example, as 59567524 + 14152644 = 7718^2 + 3762^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8733 + ... + 14956.

Almost surely, 2^73720168 is an apocalyptic number.

It is an amenable number.

73720168 is a deficient number, since it is larger than the sum of its proper divisors (64866332).

73720168 is a wasteful number, since it uses less digits than its factorization.

73720168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24084 (or 24080 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 73720168 is about 8586.0449567889. The cubic root of 73720168 is about 419.3037747130.

The spelling of 73720168 in words is "seventy-three million, seven hundred twenty thousand, one hundred sixty-eight".