73724228 has 12 divisors (see below), whose sum is σ = 129077760. Its totient is φ = 36844872.

The previous prime is 73724227. The next prime is 73724249. The reversal of 73724228 is 82242737.

It is not an unprimeable number, because it can be changed into a prime (73724227) 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 3 ways as a sum of consecutive naturals, for example, 13325 + ... + 18027.

It is an arithmetic number, because the mean of its divisors is an integer number (10756480).

Almost surely, 2^73724228 is an apocalyptic number.

It is an amenable number.

73724228 is a deficient number, since it is larger than the sum of its proper divisors (55353532).

73724228 is a wasteful number, since it uses less digits than its factorization.

73724228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8626 (or 8624 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 73724228 is about 8586.2813836957. The cubic root of 73724228 is about 419.3114720280.

The spelling of 73724228 in words is "seventy-three million, seven hundred twenty-four thousand, two hundred twenty-eight".