73716820 has 24 divisors (see below), whose sum is σ = 155169000. Its totient is φ = 29417472.

The previous prime is 73716767. The next prime is 73716829. The reversal of 73716820 is 2861737.

It can be written as a sum of positive squares in 4 ways, for example, as 1024144 + 72692676 = 1012^2 + 8526^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73716829) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4876 + ... + 13084.

It is an arithmetic number, because the mean of its divisors is an integer number (6465375).

Almost surely, 2^73716820 is an apocalyptic number.

It is an amenable number.

73716820 is an abundant number, since it is smaller than the sum of its proper divisors (81452180).

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

73716820 is a wasteful number, since it uses less digits than its factorization.

73716820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8667 (or 8665 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 73716820 is about 8585.8499870426. The cubic root of 73716820 is about 419.2974270593.

The spelling of 73716820 in words is "seventy-three million, seven hundred sixteen thousand, eight hundred twenty".