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12301992 = 2332612801
BaseRepresentation
bin101110111011…
…011010101000
3212011000011100
4232323122220
511122130432
61115401400
7206364603
oct56733250
925130140
1012301992
116a4273a
124153260
1327195b1
1418c333a
15113007c
hexbbb6a8

12301992 has 48 divisors (see below), whose sum is σ = 33876180. Its totient is φ = 4032000.

The previous prime is 12301969. The next prime is 12302023. The reversal of 12301992 is 29910321.

It can be written as a sum of positive squares in 2 ways, for example, as 11249316 + 1052676 = 3354^2 + 1026^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2992 + ... + 5792.

Almost surely, 212301992 is an apocalyptic number.

12301992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12301992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16938090).

12301992 is an abundant number, since it is smaller than the sum of its proper divisors (21574188).

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

12301992 is a wasteful number, since it uses less digits than its factorization.

12301992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874 (or 2867 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 12301992 is about 3507.4195642951. The cubic root of 12301992 is about 230.8474846406.

The spelling of 12301992 in words is "twelve million, three hundred one thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 61 72 122 183 244 366 488 549 732 1098 1464 2196 2801 4392 5602 8403 11204 16806 22408 25209 33612 50418 67224 100836 170861 201672 341722 512583 683444 1025166 1366888 1537749 2050332 3075498 4100664 6150996 12301992