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27968120 = 2351813863
BaseRepresentation
bin110101010110…
…0001001111000
31221121221001022
41222230021320
524124434440
62435242012
7456503465
oct152541170
957557038
1027968120
1114872954
129449308
135a431ab
143a0066c
1526c6cb5
hex1aac278

27968120 has 32 divisors (see below), whose sum is σ = 63292320. Its totient is φ = 11122560.

The previous prime is 27968119. The next prime is 27968131. The reversal of 27968120 is 2186972.

It is a happy number.

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, 5309 + ... + 9171.

It is an arithmetic number, because the mean of its divisors is an integer number (1977885).

Almost surely, 227968120 is an apocalyptic number.

27968120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27968120 is an abundant number, since it is smaller than the sum of its proper divisors (35324200).

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

27968120 is a wasteful number, since it uses less digits than its factorization.

27968120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055 (or 4051 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 27968120 is about 5288.4893873393. The cubic root of 27968120 is about 303.5436076399.

The spelling of 27968120 in words is "twenty-seven million, nine hundred sixty-eight thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 181 362 724 905 1448 1810 3620 3863 7240 7726 15452 19315 30904 38630 77260 154520 699203 1398406 2796812 3496015 5593624 6992030 13984060 27968120