73216810 has 16 divisors (see below), whose sum is σ = 133596936. Its totient is φ = 28885248.

The previous prime is 73216799. The next prime is 73216811. The reversal of 73216810 is 1861237.

It can be written as a sum of positive squares in 4 ways, for example, as 72437121 + 779689 = 8511^2 + 883^2 .

It is a super-2 number, since 2×73216810² = 10721402533152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73216811) 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, 49419 + ... + 50878.

Almost surely, 2^73216810 is an apocalyptic number.

73216810 is a deficient number, since it is larger than the sum of its proper divisors (60380126).

73216810 is a wasteful number, since it uses less digits than its factorization.

73216810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100377.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 73216810 is about 8556.6821841179. The cubic root of 73216810 is about 418.3472652761.

The spelling of 73216810 in words is "seventy-three million, two hundred sixteen thousand, eight hundred ten".