73718228 has 12 divisors (see below), whose sum is σ = 129355380. Its totient is φ = 36759552.

The previous prime is 73718221. The next prime is 73718237. The reversal of 73718228 is 82281737.

It can be written as a sum of positive squares in 2 ways, for example, as 34128964 + 39589264 = 5842^2 + 6292^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73718191 and 73718200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73718221) 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 3 ways as a sum of consecutive naturals, for example, 23213 + ... + 26196.

It is an arithmetic number, because the mean of its divisors is an integer number (10779615).

Almost surely, 2^73718228 is an apocalyptic number.

It is an amenable number.

73718228 is a deficient number, since it is larger than the sum of its proper divisors (55637152).

73718228 is a wasteful number, since it uses less digits than its factorization.

73718228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49786 (or 49784 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 73718228 is about 8585.9319820273. The cubic root of 73718228 is about 419.3000965858.

The spelling of 73718228 in words is "seventy-three million, seven hundred eighteen thousand, two hundred twenty-eight".