30241728 has 224 divisors, whose sum is σ = 101925120. Its totient is φ = 8709120.

The previous prime is 30241697. The next prime is 30241733. The reversal of 30241728 is 82714203.

It is a super-2 number, since 2×30241728² = 1829124224851968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 703275 + ... + 703317.

Almost surely, 2^30241728 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 30241728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50962560).

30241728 is an abundant number, since it is smaller than the sum of its proper divisors (71683392).

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

30241728 is a wasteful number, since it uses less digits than its factorization.

30241728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 30241728 is about 5499.2479485835. The cubic root of 30241728 is about 311.5555802770. Note that the first 4 decimals are identical.

The spelling of 30241728 in words is "thirty million, two hundred forty-one thousand, seven hundred twenty-eight".