30390328 has 8 divisors (see below), whose sum is σ = 56981880. Its totient is φ = 15195160.

The previous prime is 30390317. The next prime is 30390331. The reversal of 30390328 is 82309303.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 30390296 and 30390305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1899388 + ... + 1899403.

It is an arithmetic number, because the mean of its divisors is an integer number (7122735).

Almost surely, 2^30390328 is an apocalyptic number.

It is an amenable number.

30390328 is a deficient number, since it is larger than the sum of its proper divisors (26591552).

30390328 is a wasteful number, since it uses less digits than its factorization.

30390328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798797 (or 3798793 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30390328 is about 5512.7423302745. The cubic root of 30390328 is about 312.0650478006.

The spelling of 30390328 in words is "thirty million, three hundred ninety thousand, three hundred twenty-eight".