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109387916 = 22112486089
BaseRepresentation
bin1101000010100…
…10000010001100
321121211111000022
412201102002030
5211000403131
614504321312
72465532131
oct641220214
9247744008
10109387916
1156823840
1230773238
131987c8a1
1410756588
15990b37b
hex685208c

109387916 has 12 divisors (see below), whose sum is σ = 208831560. Its totient is φ = 49721760.

The previous prime is 109387909. The next prime is 109387939. The reversal of 109387916 is 619783901.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 2486089 = 109387916 / (1 + 0 + 9 + 3 + 8 + 7 + 9 + 1 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243001 + ... + 1243088.

It is an arithmetic number, because the mean of its divisors is an integer number (17402630).

Almost surely, 2109387916 is an apocalyptic number.

109387916 is the 5591-st centered heptagonal number.

It is an amenable number.

109387916 is a deficient number, since it is larger than the sum of its proper divisors (99443644).

109387916 is a wasteful number, since it uses less digits than its factorization.

109387916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486104 (or 2486102 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 109387916 is about 10458.8678163556. The cubic root of 109387916 is about 478.2516196525.

The spelling of 109387916 in words is "one hundred nine million, three hundred eighty-seven thousand, nine hundred sixteen".

Divisors: 1 2 4 11 22 44 2486089 4972178 9944356 27346979 54693958 109387916