30572128 has 12 divisors (see below), whose sum is σ = 60188940. Its totient is φ = 15286048.

The previous prime is 30572093. The next prime is 30572141. The reversal of 30572128 is 82127503.

It is a junction number, because it is equal to n+sod(n) for n = 30572096 and 30572105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477658 + ... + 477721.

It is an arithmetic number, because the mean of its divisors is an integer number (5015745).

Almost surely, 2^30572128 is an apocalyptic number.

It is an amenable number.

30572128 is a deficient number, since it is larger than the sum of its proper divisors (29616812).

30572128 is an equidigital number, since it uses as much as digits as its factorization.

30572128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955389 (or 955381 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30572128 is about 5529.2068147249. The cubic root of 30572128 is about 312.6860860750.

The spelling of 30572128 in words is "thirty million, five hundred seventy-two thousand, one hundred twenty-eight".