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27938950 = 2521353811
BaseRepresentation
bin110101010010…
…1000010000110
31221120110000221
41222211002012
524123021300
62434454554
7456322444
oct152450206
957513027
1027938950
1114852a46
12943445a
135a32b30
1439d3b94
1526bd31a
hex1aa5086

27938950 has 48 divisors (see below), whose sum is σ = 57090096. Its totient is φ = 10108800.

The previous prime is 27938941. The next prime is 27938971. The reversal of 27938950 is 5983972.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27938897 and 27938906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34045 + ... + 34855.

It is an arithmetic number, because the mean of its divisors is an integer number (1189377).

Almost surely, 227938950 is an apocalyptic number.

27938950 is an abundant number, since it is smaller than the sum of its proper divisors (29151146).

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

27938950 is a wasteful number, since it uses less digits than its factorization.

27938950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 27938950 is about 5285.7307914800. The cubic root of 27938950 is about 303.4380416466.

The spelling of 27938950 in words is "twenty-seven million, nine hundred thirty-eight thousand, nine hundred fifty".

Divisors: 1 2 5 10 13 25 26 50 53 65 106 130 265 325 530 650 689 811 1325 1378 1622 2650 3445 4055 6890 8110 10543 17225 20275 21086 34450 40550 42983 52715 85966 105430 214915 263575 429830 527150 558779 1074575 1117558 2149150 2793895 5587790 13969475 27938950