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30218848 = 25112932
BaseRepresentation
bin111001101000…
…1101001100000
32002212021110121
41303101221200
530214000343
62555410024
7514566412
oct163215140
962767417
1030218848
111606a960
12a153914
13635079a
1440289b2
1529bdaed
hex1cd1a60

30218848 has 36 divisors (see below), whose sum is σ = 65124108. Its totient is φ = 13688960.

The previous prime is 30218819. The next prime is 30218857. The reversal of 30218848 is 84881203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102990 + ... + 103282.

It is an arithmetic number, because the mean of its divisors is an integer number (1809003).

Almost surely, 230218848 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 30218848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32562054).

30218848 is an abundant number, since it is smaller than the sum of its proper divisors (34905260).

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

30218848 is an equidigital number, since it uses as much as digits as its factorization.

30218848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 30218848 is about 5497.1672705131. The cubic root of 30218848 is about 311.4769891976.

The spelling of 30218848 in words is "thirty million, two hundred eighteen thousand, eight hundred forty-eight".

Divisors: 1 2 4 8 11 16 22 32 44 88 176 293 352 586 1172 2344 3223 4688 6446 9376 12892 25784 51568 85849 103136 171698 343396 686792 944339 1373584 1888678 2747168 3777356 7554712 15109424 30218848