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16830138 = 2313215771
BaseRepresentation
bin100000000110…
…0111010111010
31011200001121110
41000030322322
513302031023
61400421150
7263024313
oct100147272
934601543
1016830138
119555806
1257777b6
133643680
14234160a
151726a93
hex100ceba

16830138 has 16 divisors (see below), whose sum is σ = 36249696. Its totient is φ = 5178480.

The previous prime is 16830127. The next prime is 16830139. The reversal of 16830138 is 83103861.

It is not an unprimeable number, because it can be changed into a prime (16830139) 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, 107808 + ... + 107963.

It is an arithmetic number, because the mean of its divisors is an integer number (2265606).

Almost surely, 216830138 is an apocalyptic number.

16830138 is an abundant number, since it is smaller than the sum of its proper divisors (19419558).

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

16830138 is a wasteful number, since it uses less digits than its factorization.

16830138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215789.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 16830138 is about 4102.4551185845. The cubic root of 16830138 is about 256.2688926780.

Adding to 16830138 its reverse (83103861), we get a palindrome (99933999).

The spelling of 16830138 in words is "sixteen million, eight hundred thirty thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 13 26 39 78 215771 431542 647313 1294626 2805023 5610046 8415069 16830138