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27842990 = 257397757
BaseRepresentation
bin110101000110…
…1100110101110
31221101120101212
41222031212232
524111433430
62432434422
7455442620
oct152154656
957346355
1027842990
111479793a
1293a8a12
1359cb256
1439aac10
15269eb95
hex1a8d9ae

27842990 has 16 divisors (see below), whose sum is σ = 57277152. Its totient is φ = 9546144.

The previous prime is 27842953. The next prime is 27843043. The reversal of 27842990 is 9924872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198809 + ... + 198948.

It is an arithmetic number, because the mean of its divisors is an integer number (3579822).

Almost surely, 227842990 is an apocalyptic number.

27842990 is an abundant number, since it is smaller than the sum of its proper divisors (29434162).

27842990 is a wasteful number, since it uses less digits than its factorization.

27842990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397771.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 27842990 is about 5276.6457148457. The cubic root of 27842990 is about 303.0902438628.

The spelling of 27842990 in words is "twenty-seven million, eight hundred forty-two thousand, nine hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 397757 795514 1988785 2784299 3977570 5568598 13921495 27842990