30328280 has 32 divisors (see below), whose sum is σ = 68923440. Its totient is φ = 12009600.

The previous prime is 30328279. The next prime is 30328297. The reversal of 30328280 is 8282303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287 + ... + 7793.

Almost surely, 2^30328280 is an apocalyptic number.

It is an amenable number.

30328280 is an abundant number, since it is smaller than the sum of its proper divisors (38595160).

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

30328280 is a wasteful number, since it uses less digits than its factorization.

30328280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7619 (or 7615 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 30328280 is about 5507.1117657080. Note that the first 3 decimals coincide. The cubic root of 30328280 is about 311.8525217968.

The spelling of 30328280 in words is "thirty million, three hundred twenty-eight thousand, two hundred eighty".