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12629129 = 19664691
BaseRepresentation
bin110000001011…
…010010001001
3212202121220112
4300023102021
511213113004
61130404105
7212226422
oct60132211
925677815
1012629129
1171464a7
124290635
132802476
14196a649
151196e6e
hexc0b489

12629129 has 4 divisors (see below), whose sum is σ = 13293840. Its totient is φ = 11964420.

The previous prime is 12629119. The next prime is 12629131. The reversal of 12629129 is 92192621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92192621 = 98393787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12629129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12629095 and 12629104.

It is not an unprimeable number, because it can be changed into a prime (12629119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332327 + ... + 332364.

It is an arithmetic number, because the mean of its divisors is an integer number (3323460).

Almost surely, 212629129 is an apocalyptic number.

12629129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12629129 is a deficient number, since it is larger than the sum of its proper divisors (664711).

12629129 is an equidigital number, since it uses as much as digits as its factorization.

12629129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664710.

The product of its digits is 3888, while the sum is 32.

The square root of 12629129 is about 3553.7485842417. The cubic root of 12629129 is about 232.8758571676.

The spelling of 12629129 in words is "twelve million, six hundred twenty-nine thousand, one hundred twenty-nine".

Divisors: 1 19 664691 12629129