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30880272 = 2432113049
BaseRepresentation
bin111010111001…
…1001000010000
32011002212202210
41311303020100
530401132042
63021512120
7523322643
oct165631020
964085683
1030880272
1116481895
12a412640
136522867
14415ba5a
152a9ea9c
hex1d73210

30880272 has 40 divisors (see below), whose sum is σ = 80178400. Its totient is φ = 10241280.

The previous prime is 30880271. The next prime is 30880277. The reversal of 30880272 is 27208803.

It is not an unprimeable number, because it can be changed into a prime (30880271) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8604 + ... + 11652.

It is an arithmetic number, because the mean of its divisors is an integer number (2004460).

Almost surely, 230880272 is an apocalyptic number.

It is an amenable number.

30880272 is an abundant number, since it is smaller than the sum of its proper divisors (49298128).

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

30880272 is a wasteful number, since it uses less digits than its factorization.

30880272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271 (or 3265 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 30880272 is about 5557.0020694616. The cubic root of 30880272 is about 313.7331227992.

The spelling of 30880272 in words is "thirty million, eight hundred eighty thousand, two hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 16 24 48 211 422 633 844 1266 1688 2532 3049 3376 5064 6098 9147 10128 12196 18294 24392 36588 48784 73176 146352 643339 1286678 1930017 2573356 3860034 5146712 7720068 10293424 15440136 30880272