30284428 has 12 divisors (see below), whose sum is σ = 53136720. Its totient is φ = 15102512.

The previous prime is 30284393. The next prime is 30284431. The reversal of 30284428 is 82448203.

It is a self number, because there is not a number n which added to its sum of digits gives 30284428.

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, 8176 + ... + 11287.

It is an arithmetic number, because the mean of its divisors is an integer number (4428060).

Almost surely, 2^30284428 is an apocalyptic number.

It is an amenable number.

30284428 is a deficient number, since it is larger than the sum of its proper divisors (22852292).

30284428 is a wasteful number, since it uses less digits than its factorization.

30284428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19856 (or 19854 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 30284428 is about 5503.1289281644. The cubic root of 30284428 is about 311.7021456111.

The spelling of 30284428 in words is "thirty million, two hundred eighty-four thousand, four hundred twenty-eight".