73439228 has 12 divisors (see below), whose sum is σ = 131992392. Its totient is φ = 35727120.

The previous prime is 73439213. The next prime is 73439243. The reversal of 73439228 is 82293437.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (73439213) and next prime (73439243).

It is a junction number, because it is equal to n+sod(n) for n = 73439191 and 73439200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247958 + ... + 248253.

It is an arithmetic number, because the mean of its divisors is an integer number (10999366).

Almost surely, 2^73439228 is an apocalyptic number.

It is an amenable number.

73439228 is a deficient number, since it is larger than the sum of its proper divisors (58553164).

73439228 is a wasteful number, since it uses less digits than its factorization.

73439228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496252 (or 496250 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 73439228 is about 8569.6690717903. The cubic root of 73439228 is about 418.7704554350.

The spelling of 73439228 in words is "seventy-three million, four hundred thirty-nine thousand, two hundred twenty-eight".