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13711992 = 233781619
BaseRepresentation
bin110100010011…
…101001111000
3221210122022120
4310103221320
512002240432
61205521240
7224356440
oct64235170
927718276
1013711992
117816028
124713220
132ac1308
141b6d120
15130cc2c
hexd13a78

13711992 has 32 divisors (see below), whose sum is σ = 39177600. Its totient is φ = 3917664.

The previous prime is 13711991. The next prime is 13711993. The reversal of 13711992 is 29911731.

13711992 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13711991) and next prime (13711993).

It is a super-3 number, since 3×137119923 (a number of 22 digits) contains 333 as substring.

13711992 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13711991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40642 + ... + 40977.

It is an arithmetic number, because the mean of its divisors is an integer number (1224300).

Almost surely, 213711992 is an apocalyptic number.

13711992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13711992 is an abundant number, since it is smaller than the sum of its proper divisors (25465608).

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

13711992 is a wasteful number, since it uses less digits than its factorization.

13711992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81635 (or 81631 counting only the distinct ones).

The product of its digits is 3402, while the sum is 33.

The square root of 13711992 is about 3702.9706993170. The cubic root of 13711992 is about 239.3500469823.

The spelling of 13711992 in words is "thirteen million, seven hundred eleven thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 81619 163238 244857 326476 489714 571333 652952 979428 1142666 1713999 1958856 2285332 3427998 4570664 6855996 13711992