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12572371 = 72256579
BaseRepresentation
bin101111111101…
…011011010011
3212122202001101
4233331123103
511204303441
61125245231
7211602100
oct57753323
925582041
1012572371
117107899
124263817
1327b2696
141953aa7
151185231
hexbfd6d3

12572371 has 6 divisors (see below), whose sum is σ = 14625060. Its totient is φ = 10776276.

The previous prime is 12572347. The next prime is 12572377. The reversal of 12572371 is 17327521.

It is not a de Polignac number, because 12572371 - 29 = 12571859 is a prime.

It is a super-3 number, since 3×125723713 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12572377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128241 + ... + 128338.

It is an arithmetic number, because the mean of its divisors is an integer number (2437510).

Almost surely, 212572371 is an apocalyptic number.

12572371 is a deficient number, since it is larger than the sum of its proper divisors (2052689).

12572371 is an equidigital number, since it uses as much as digits as its factorization.

12572371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256593 (or 256586 counting only the distinct ones).

The product of its digits is 2940, while the sum is 28.

The square root of 12572371 is about 3545.7539395734. The cubic root of 12572371 is about 232.5264686404.

Adding to 12572371 its reverse (17327521), we get a palindrome (29899892).

The spelling of 12572371 in words is "twelve million, five hundred seventy-two thousand, three hundred seventy-one".

Divisors: 1 7 49 256579 1796053 12572371