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12890292 = 2232234817
BaseRepresentation
bin110001001011…
…000010110100
3220020220011020
4301023002310
511244442132
61140141140
7214365012
oct61130264
926226136
1012890292
117304738
1243977b0
1328942bc
1419d78b2
1511e952c
hexc4b0b4

12890292 has 24 divisors (see below), whose sum is σ = 30218496. Its totient is φ = 4276608.

The previous prime is 12890291. The next prime is 12890299. The reversal of 12890292 is 29209821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12890291) 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, 268 + ... + 5084.

It is an arithmetic number, because the mean of its divisors is an integer number (1259104).

Almost surely, 212890292 is an apocalyptic number.

12890292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12890292 is an abundant number, since it is smaller than the sum of its proper divisors (17328204).

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

12890292 is a wasteful number, since it uses less digits than its factorization.

12890292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047 (or 5045 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12890292 is about 3590.3052794992. The cubic root of 12890292 is about 234.4701628848.

The spelling of 12890292 in words is "twelve million, eight hundred ninety thousand, two hundred ninety-two".

Divisors: 1 2 3 4 6 12 223 446 669 892 1338 2676 4817 9634 14451 19268 28902 57804 1074191 2148382 3222573 4296764 6445146 12890292