30428847 has 12 divisors (see below), whose sum is σ = 45025344. Its totient is φ = 19790880.

The previous prime is 30428843. The next prime is 30428857. The reversal of 30428847 is 74882403.

It is not a de Polignac number, because 30428847 - 2² = 30428843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30428843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40863 + ... + 41600.

It is an arithmetic number, because the mean of its divisors is an integer number (3752112).

Almost surely, 2^30428847 is an apocalyptic number.

30428847 is a deficient number, since it is larger than the sum of its proper divisors (14596497).

30428847 is a wasteful number, since it uses less digits than its factorization.

30428847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82510 (or 82507 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 30428847 is about 5516.2348572192. The cubic root of 30428847 is about 312.1968370836.

The spelling of 30428847 in words is "thirty million, four hundred twenty-eight thousand, eight hundred forty-seven".