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30852808 = 23719107271
BaseRepresentation
bin111010110110…
…0011011001000
32011001111002121
41311230123020
530344242213
63021141024
7523146610
oct165543310
964044077
1030852808
1116463198
12a3ba774
1365131cc
144151a40
152a9688d
hex1d6c6c8

30852808 has 64 divisors (see below), whose sum is σ = 70502400. Its totient is φ = 12363840.

The previous prime is 30852799. The next prime is 30852823. The reversal of 30852808 is 80825803.

It is a happy number.

It is a super-2 number, since 2×308528082 = 1903791522969728, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 113713 + ... + 113983.

It is an arithmetic number, because the mean of its divisors is an integer number (1101600).

Almost surely, 230852808 is an apocalyptic number.

30852808 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30852808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35251200).

30852808 is an abundant number, since it is smaller than the sum of its proper divisors (39649592).

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

30852808 is a wasteful number, since it uses less digits than its factorization.

30852808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 30852808 is about 5554.5304031934. The cubic root of 30852808 is about 313.6400868945.

The spelling of 30852808 in words is "thirty million, eight hundred fifty-two thousand, eight hundred eight".

Divisors: 1 2 4 7 8 14 19 28 38 56 76 107 133 152 214 266 271 428 532 542 749 856 1064 1084 1498 1897 2033 2168 2996 3794 4066 5149 5992 7588 8132 10298 14231 15176 16264 20596 28462 28997 36043 41192 56924 57994 72086 113848 115988 144172 202979 231976 288344 405958 550943 811916 1101886 1623832 2203772 3856601 4407544 7713202 15426404 30852808