30392128 has 28 divisors (see below), whose sum is σ = 64950340. Its totient is φ = 14026752.

The previous prime is 30392101. The next prime is 30392149. The reversal of 30392128 is 82129303.

It can be written as a sum of positive squares in 2 ways, for example, as 13483584 + 16908544 = 3672^2 + 4112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30392096 and 30392105.

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, 17433 + ... + 19096.

It is an arithmetic number, because the mean of its divisors is an integer number (2319655).

Almost surely, 2^30392128 is an apocalyptic number.

It is an amenable number.

30392128 is an abundant number, since it is smaller than the sum of its proper divisors (34558212).

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

30392128 is a wasteful number, since it uses less digits than its factorization.

30392128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36554 (or 36544 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 30392128 is about 5512.9055859864. The cubic root of 30392128 is about 312.0712088178.

The spelling of 30392128 in words is "thirty million, three hundred ninety-two thousand, one hundred twenty-eight".