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12072749 = 134719759
BaseRepresentation
bin101110000011…
…011100101101
3211201100200212
4232003130231
511042311444
61110432205
7204421343
oct56033455
924640625
1012072749
1168a6487
124062665
132669150
141863993
1510d719e
hexb8372d

12072749 has 8 divisors (see below), whose sum is σ = 13278720. Its totient is φ = 10906416.

The previous prime is 12072743. The next prime is 12072763. The reversal of 12072749 is 94727021.

12072749 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12072749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12072743) 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, 9269 + ... + 10490.

It is an arithmetic number, because the mean of its divisors is an integer number (1659840).

Almost surely, 212072749 is an apocalyptic number.

It is an amenable number.

12072749 is a deficient number, since it is larger than the sum of its proper divisors (1205971).

12072749 is a wasteful number, since it uses less digits than its factorization.

12072749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19819.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 12072749 is about 3474.5861624084. The cubic root of 12072749 is about 229.4045657034.

It can be divided in two parts, 12072 and 749, that added together give a palindrome (12821).

The spelling of 12072749 in words is "twelve million, seventy-two thousand, seven hundred forty-nine".

Divisors: 1 13 47 611 19759 256867 928673 12072749