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12610381 = 77125373
BaseRepresentation
bin110000000110…
…101101001101
3212201200012011
4300012231031
511212013011
61130141221
7212120650
oct60065515
925650164
1012610381
117133403
124281811
1327c6a84
141963897
151191621
hexc06b4d

12610381 has 8 divisors (see below), whose sum is σ = 14615424. Its totient is φ = 10656240.

The previous prime is 12610373. The next prime is 12610387. The reversal of 12610381 is 18301621.

12610381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12610381 - 23 = 12610373 is a prime.

It is a super-2 number, since 2×126103812 = 318043417930322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12610387) 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, 12190 + ... + 13183.

It is an arithmetic number, because the mean of its divisors is an integer number (1826928).

Almost surely, 212610381 is an apocalyptic number.

It is an amenable number.

12610381 is a deficient number, since it is larger than the sum of its proper divisors (2005043).

12610381 is an equidigital number, since it uses as much as digits as its factorization.

12610381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25451.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 12610381 is about 3551.1098265190. The cubic root of 12610381 is about 232.7605650050.

The spelling of 12610381 in words is "twelve million, six hundred ten thousand, three hundred eighty-one".

Divisors: 1 7 71 497 25373 177611 1801483 12610381