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12541992 = 2332322721
BaseRepresentation
bin101111110110…
…000000101000
3212121012101020
4233312000220
511202320432
61124452440
7211414401
oct57660050
925535336
1012541992
117096a91
12424a120
1327a18c8
1419469a8
15117b22c
hexbf6028

12541992 has 32 divisors (see below), whose sum is σ = 32719680. Its totient is φ = 3998720.

The previous prime is 12541967. The next prime is 12541999. The reversal of 12541992 is 29914521.

It is not an unprimeable number, because it can be changed into a prime (12541999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10809 + ... + 11912.

It is an arithmetic number, because the mean of its divisors is an integer number (1022490).

Almost surely, 212541992 is an apocalyptic number.

12541992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12541992 is an abundant number, since it is smaller than the sum of its proper divisors (20177688).

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

12541992 is a wasteful number, since it uses less digits than its factorization.

12541992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22753 (or 22749 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 12541992 is about 3541.4674924387. The cubic root of 12541992 is about 232.3390306774.

The spelling of 12541992 in words is "twelve million, five hundred forty-one thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 23 24 46 69 92 138 184 276 552 22721 45442 68163 90884 136326 181768 272652 522583 545304 1045166 1567749 2090332 3135498 4180664 6270996 12541992