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27989962 = 27112133141
BaseRepresentation
bin110101011000…
…1011111001010
31221200001000021
41222301133022
524131134322
62435531054
7456624250
oct152613712
957601007
1027989962
1114888300
129459a8a
135a50110
143a085d0
1526cd4c7
hex1ab17ca

27989962 has 96 divisors (see below), whose sum is σ = 60060672. Its totient is φ = 9504000.

The previous prime is 27989933. The next prime is 27989971. The reversal of 27989962 is 26998972.

It is a super-2 number, since 2×279899622 = 1566875945522888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 682662 + ... + 682702.

It is an arithmetic number, because the mean of its divisors is an integer number (625632).

Almost surely, 227989962 is an apocalyptic number.

27989962 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27989962 is an abundant number, since it is smaller than the sum of its proper divisors (32070710).

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

27989962 is a wasteful number, since it uses less digits than its factorization.

27989962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 105 counting only the distinct ones).

The product of its digits is 979776, while the sum is 52.

The square root of 27989962 is about 5290.5540352594. The cubic root of 27989962 is about 303.6226056122.

It can be divided in two parts, 27 and 989962, that added together give a palindrome (989989).

The spelling of 27989962 in words is "twenty-seven million, nine hundred eighty-nine thousand, nine hundred sixty-two".

Divisors: 1 2 7 11 13 14 22 26 31 41 62 77 82 91 121 143 154 182 217 242 286 287 341 403 434 451 533 574 682 806 847 902 1001 1066 1271 1573 1694 2002 2387 2542 2821 3146 3157 3731 3751 4433 4774 4961 5642 5863 6314 7462 7502 8866 8897 9922 11011 11726 13981 16523 17794 22022 26257 27962 31031 33046 34727 41041 48763 52514 62062 64493 69454 82082 97526 97867 115661 128986 153791 181753 195734 231322 307582 341341 363506 451451 682682 902902 1076537 1272271 1999283 2153074 2544542 3998566 13994981 27989962