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12570631 = 181199349
BaseRepresentation
bin101111111101…
…000000000111
3212122122122221
4233331000013
511204230011
61125233211
7211564033
oct57750007
925578587
1012570631
117106557
124262807
1327b1958
1419531c3
151184971
hexbfd007

12570631 has 8 divisors (see below), whose sum is σ = 12740000. Its totient is φ = 12402720.

The previous prime is 12570619. The next prime is 12570637. The reversal of 12570631 is 13607521.

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

It is a cyclic number.

It is not a de Polignac number, because 12570631 - 29 = 12570119 is a prime.

It is a super-2 number, since 2×125706312 = 316041527476322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12570596 and 12570605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12570637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35845 + ... + 36193.

It is an arithmetic number, because the mean of its divisors is an integer number (1592500).

Almost surely, 212570631 is an apocalyptic number.

12570631 is a deficient number, since it is larger than the sum of its proper divisors (169369).

12570631 is a wasteful number, since it uses less digits than its factorization.

12570631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 12570631 is about 3545.5085671875. The cubic root of 12570631 is about 232.5157410239.

It can be divided in two parts, 125 and 70631, that added together give a square (70756 = 2662).

The spelling of 12570631 in words is "twelve million, five hundred seventy thousand, six hundred thirty-one".

Divisors: 1 181 199 349 36019 63169 69451 12570631