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244820149 = 7193135881
BaseRepresentation
bin11101001011110…
…10100010110101
3122001200011002221
432211322202311
51000133221044
640143202341
76031636240
oct1645724265
9561604087
10244820149
11116216002
1269ba63b1
133b94aac2
142472c257
151675e484
hexe97a8b5

244820149 has 16 divisors (see below), whose sum is σ = 295511680. Its totient is φ = 198132480.

The previous prime is 244820137. The next prime is 244820153. The reversal of 244820149 is 941028442.

It is not a de Polignac number, because 244820149 - 27 = 244820021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244820189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38689 + ... + 44569.

It is an arithmetic number, because the mean of its divisors is an integer number (18469480).

Almost surely, 2244820149 is an apocalyptic number.

It is an amenable number.

244820149 is a deficient number, since it is larger than the sum of its proper divisors (50691531).

244820149 is a wasteful number, since it uses less digits than its factorization.

244820149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6220.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 244820149 is about 15646.7296583024. The cubic root of 244820149 is about 625.5793233293.

The spelling of 244820149 in words is "two hundred forty-four million, eight hundred twenty thousand, one hundred forty-nine".

Divisors: 1 7 19 133 313 2191 5881 5947 41167 41629 111739 782173 1840753 12885271 34974307 244820149