30328556 has 12 divisors (see below), whose sum is σ = 53590992. Its totient is φ = 15016848.

The previous prime is 30328553. The next prime is 30328589. The reversal of 30328556 is 65582303.

It is not an unprimeable number, because it can be changed into a prime (30328553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36395 + ... + 37218.

It is an arithmetic number, because the mean of its divisors is an integer number (4465916).

Almost surely, 2^30328556 is an apocalyptic number.

It is an amenable number.

30328556 is a deficient number, since it is larger than the sum of its proper divisors (23262436).

30328556 is a wasteful number, since it uses less digits than its factorization.

30328556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73720 (or 73718 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 30328556 is about 5507.1368241583. The cubic root of 30328556 is about 311.8534677900.

The spelling of 30328556 in words is "thirty million, three hundred twenty-eight thousand, five hundred fifty-six".