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16830378 = 232935021
BaseRepresentation
bin100000000110…
…0111110101010
31011200001221100
41000030332222
513302033003
61400422230
7263025105
oct100147652
934601840
1016830378
119555a04
125777976
133643806
14234173c
151726ba3
hex100cfaa

16830378 has 12 divisors (see below), whose sum is σ = 36465858. Its totient is φ = 5610120.

The previous prime is 16830367. The next prime is 16830379. The reversal of 16830378 is 87303861.

It can be written as a sum of positive squares in only one way, i.e., 15468489 + 1361889 = 3933^2 + 1167^2 .

It is not an unprimeable number, because it can be changed into a prime (16830379) 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 5 ways as a sum of consecutive naturals, for example, 467493 + ... + 467528.

Almost surely, 216830378 is an apocalyptic number.

16830378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16830378 is an abundant number, since it is smaller than the sum of its proper divisors (19635480).

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

16830378 is a wasteful number, since it uses less digits than its factorization.

16830378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935029 (or 935026 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 16830378 is about 4102.4843692572. The cubic root of 16830378 is about 256.2701108151.

The spelling of 16830378 in words is "sixteen million, eight hundred thirty thousand, three hundred seventy-eight".

Divisors: 1 2 3 6 9 18 935021 1870042 2805063 5610126 8415189 16830378