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809837244 = 223353141481
BaseRepresentation
bin110000010001010…
…010001010111100
32002102211222212000
4300101102022330
53124304242434
6212205342300
726032334346
oct6021221274
92072758760
10809837244
1138614a787
121a7267990
13cba18648
14797aa296
154b16bb99
hex304522bc

809837244 has 48 divisors (see below), whose sum is σ = 2139207840. Its totient is φ = 264850560.

The previous prime is 809837221. The next prime is 809837251. The reversal of 809837244 is 442738908.

It is a self number, because there is not a number n which added to its sum of digits gives 809837244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65017 + ... + 76464.

It is an arithmetic number, because the mean of its divisors is an integer number (44566830).

Almost surely, 2809837244 is an apocalyptic number.

It is an amenable number.

809837244 is an abundant number, since it is smaller than the sum of its proper divisors (1329370596).

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

809837244 is a wasteful number, since it uses less digits than its factorization.

809837244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141547 (or 141539 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 809837244 is about 28457.6394664069. The cubic root of 809837244 is about 932.1073129455.

The spelling of 809837244 in words is "eight hundred nine million, eight hundred thirty-seven thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 9 12 18 27 36 53 54 106 108 159 212 318 477 636 954 1431 1908 2862 5724 141481 282962 424443 565924 848886 1273329 1697772 2546658 3819987 5093316 7498493 7639974 14996986 15279948 22495479 29993972 44990958 67486437 89981916 134972874 202459311 269945748 404918622 809837244