30424728 has 32 divisors (see below), whose sum is σ = 76527360. Its totient is φ = 10079520.

The previous prime is 30424727. The next prime is 30424753. The reversal of 30424728 is 82742403.

It is a junction number, because it is equal to n+sod(n) for n = 30424695 and 30424704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30424727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213 + ... + 7803.

It is an arithmetic number, because the mean of its divisors is an integer number (2391480).

Almost surely, 2^30424728 is an apocalyptic number.

It is an amenable number.

30424728 is an abundant number, since it is smaller than the sum of its proper divisors (46102632).

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

30424728 is a wasteful number, since it uses less digits than its factorization.

30424728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7767 (or 7763 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 30424728 is about 5515.8614920971. The cubic root of 30424728 is about 312.1827496093.

The spelling of 30424728 in words is "thirty million, four hundred twenty-four thousand, seven hundred twenty-eight".