73303821 has 12 divisors (see below), whose sum is σ = 106053948. Its totient is φ = 48790464.

The previous prime is 73303819. The next prime is 73303849. The reversal of 73303821 is 12830337.

It can be written as a sum of positive squares in 2 ways, for example, as 33802596 + 39501225 = 5814^2 + 6285^2 .

It is not a de Polignac number, because 73303821 - 2¹ = 73303819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73303861) 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 11 ways as a sum of consecutive naturals, for example, 360 + ... + 12113.

It is an arithmetic number, because the mean of its divisors is an integer number (8837829).

Almost surely, 2^73303821 is an apocalyptic number.

It is an amenable number.

73303821 is a deficient number, since it is larger than the sum of its proper divisors (32750127).

73303821 is a wasteful number, since it uses less digits than its factorization.

73303821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13132 (or 13129 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 73303821 is about 8561.7650633500. The cubic root of 73303821 is about 418.5129212405.

The spelling of 73303821 in words is "seventy-three million, three hundred three thousand, eight hundred twenty-one".