73812145 has 16 divisors (see below), whose sum is σ = 96909120. Its totient is φ = 53524800.

The previous prime is 73812133. The next prime is 73812161. The reversal of 73812145 is 54121837.

It is not a de Polignac number, because 73812145 - 2¹⁷ = 73681073 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 19075 + ... + 22615.

It is an arithmetic number, because the mean of its divisors is an integer number (6056820).

Almost surely, 2^73812145 is an apocalyptic number.

It is an amenable number.

73812145 is a deficient number, since it is larger than the sum of its proper divisors (23096975).

73812145 is a wasteful number, since it uses less digits than its factorization.

73812145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936.

The product of its digits is 6720, while the sum is 31.

The square root of 73812145 is about 8591.3994785483. The cubic root of 73812145 is about 419.4780837538.

It can be divided in two parts, 73 and 812145, that added together give a palindrome (812218).

The spelling of 73812145 in words is "seventy-three million, eight hundred twelve thousand, one hundred forty-five".