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109808937 = 3271742999
BaseRepresentation
bin1101000101110…
…00110100101001
321122121212112200
412202320310221
5211102341222
614521330413
72502234450
oct642706451
9248555480
10109808937
1156a91097
1230936a09
1319999404
1410825b97
159990eac
hex68b8d29

109808937 has 12 divisors (see below), whose sum is σ = 181272000. Its totient is φ = 62747928.

The previous prime is 109808927. The next prime is 109808953. The reversal of 109808937 is 739808901.

It is not a de Polignac number, because 109808937 - 211 = 109806889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109808892 and 109808901.

It is not an unprimeable number, because it can be changed into a prime (109808927) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 871437 + ... + 871562.

It is an arithmetic number, because the mean of its divisors is an integer number (15106000).

Almost surely, 2109808937 is an apocalyptic number.

It is an amenable number.

109808937 is a deficient number, since it is larger than the sum of its proper divisors (71463063).

109808937 is a wasteful number, since it uses less digits than its factorization.

109808937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743012 (or 1743009 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 109808937 is about 10478.9759518762. The cubic root of 109808937 is about 478.8644118887.

The spelling of 109808937 in words is "one hundred nine million, eight hundred eight thousand, nine hundred thirty-seven".

Divisors: 1 3 7 9 21 63 1742999 5228997 12200993 15686991 36602979 109808937