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12630044 = 227264439
BaseRepresentation
bin110000001011…
…100000011100
3212202200011102
4300023200130
511213130134
61130412232
7212232200
oct60134034
925680142
1012630044
117147159
124291078
1328029cb
14196ab00
15119737e
hexc0b81c

12630044 has 18 divisors (see below), whose sum is σ = 25711560. Its totient is φ = 5412792.

The previous prime is 12630029. The next prime is 12630067. The reversal of 12630044 is 44003621.

It is a happy number.

It is a super-2 number, since 2×126300442 = 319036022883872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12629998 and 12630025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32024 + ... + 32415.

It is an arithmetic number, because the mean of its divisors is an integer number (1428420).

Almost surely, 212630044 is an apocalyptic number.

12630044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12630044 is an abundant number, since it is smaller than the sum of its proper divisors (13081516).

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

12630044 is a wasteful number, since it uses less digits than its factorization.

12630044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64457 (or 64448 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 12630044 is about 3553.8773192107. The cubic root of 12630044 is about 232.8814811042.

Adding to 12630044 its reverse (44003621), we get a palindrome (56633665).

The spelling of 12630044 in words is "twelve million, six hundred thirty thousand, forty-four".

Divisors: 1 2 4 7 14 28 49 98 196 64439 128878 257756 451073 902146 1804292 3157511 6315022 12630044