73989320 has 16 divisors (see below), whose sum is σ = 166476060. Its totient is φ = 29595712.

The previous prime is 73989317. The next prime is 73989337. The reversal of 73989320 is 2398937.

It can be written as a sum of positive squares in 2 ways, for example, as 73239364 + 749956 = 8558^2 + 866^2 .

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, 924827 + ... + 924906.

Almost surely, 2^73989320 is an apocalyptic number.

It is an amenable number.

73989320 is an abundant number, since it is smaller than the sum of its proper divisors (92486740).

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

73989320 is a wasteful number, since it uses less digits than its factorization.

73989320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849744 (or 1849740 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 73989320 is about 8601.7044822523. The cubic root of 73989320 is about 419.8134470067.

The spelling of 73989320 in words is "seventy-three million, nine hundred eighty-nine thousand, three hundred twenty".