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24128109 = 325945439
BaseRepresentation
bin101110000001…
…0101001101101
31200101211112200
41130002221231
522134044414
62221052113
7412041225
oct134025155
950354480
1024128109
111268a895
1280b7039
134cca3b5
1432c1085
1521b9109
hex1702a6d

24128109 has 12 divisors (see below), whose sum is σ = 35443200. Its totient is φ = 15812424.

The previous prime is 24128077. The next prime is 24128113. The reversal of 24128109 is 90182142.

It is not a de Polignac number, because 24128109 - 25 = 24128077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24128129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22189 + ... + 23250.

It is an arithmetic number, because the mean of its divisors is an integer number (2953600).

Almost surely, 224128109 is an apocalyptic number.

It is an amenable number.

24128109 is a deficient number, since it is larger than the sum of its proper divisors (11315091).

24128109 is a wasteful number, since it uses less digits than its factorization.

24128109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45504 (or 45501 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 24128109 is about 4912.0371537683. The cubic root of 24128109 is about 288.9622400908.

The spelling of 24128109 in words is "twenty-four million, one hundred twenty-eight thousand, one hundred nine".

Divisors: 1 3 9 59 177 531 45439 136317 408951 2680901 8042703 24128109