30284928 has 160 divisors (see below), whose sum is σ = 94786560. Its totient is φ = 9580032.

The previous prime is 30284927. The next prime is 30284953. The reversal of 30284928 is 82948203.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 30284892 and 30284901.

It is not an unprimeable number, because it can be changed into a prime (30284921) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 238401 + ... + 238527.

It is an arithmetic number, because the mean of its divisors is an integer number (592416).

Almost surely, 2^30284928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30284928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47393280).

30284928 is an abundant number, since it is smaller than the sum of its proper divisors (64501632).

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

30284928 is a wasteful number, since it uses less digits than its factorization.

30284928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 30284928 is about 5503.1743566782. The cubic root of 30284928 is about 311.7038610165.

The spelling of 30284928 in words is "thirty million, two hundred eighty-four thousand, nine hundred twenty-eight".