73181480 has 16 divisors (see below), whose sum is σ = 164658420. Its totient is φ = 29272576.

The previous prime is 73181467. The next prime is 73181497. The reversal of 73181480 is 8418137.

It can be written as a sum of positive squares in 2 ways, for example, as 65966884 + 7214596 = 8122^2 + 2686^2 .

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, 914729 + ... + 914808.

Almost surely, 2^73181480 is an apocalyptic number.

It is an amenable number.

73181480 is an abundant number, since it is smaller than the sum of its proper divisors (91476940).

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

73181480 is a wasteful number, since it uses less digits than its factorization.

73181480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829548 (or 1829544 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 73181480 is about 8554.6174666083. The cubic root of 73181480 is about 418.2799647619.

The spelling of 73181480 in words is "seventy-three million, one hundred eighty-one thousand, four hundred eighty".