71730228 has 24 divisors (see below), whose sum is σ = 167513920. Its totient is φ = 23889600.

The previous prime is 71730223. The next prime is 71730233. The reversal of 71730228 is 82203717.

It is an interprime number because it is at equal distance from previous prime (71730223) and next prime (71730233).

It is a junction number, because it is equal to n+sod(n) for n = 71730195 and 71730204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71730221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19953 + ... + 23271.

Almost surely, 2^71730228 is an apocalyptic number.

It is an amenable number.

71730228 is an abundant number, since it is smaller than the sum of its proper divisors (95783692).

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

71730228 is a wasteful number, since it uses less digits than its factorization.

71730228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127 (or 5125 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 71730228 is about 8469.3699883758. The cubic root of 71730228 is about 415.4965325004.

The spelling of 71730228 in words is "seventy-one million, seven hundred thirty thousand, two hundred twenty-eight".