12306749 has 24 divisors (see below), whose sum is σ = 15530112. Its totient is φ = 9547200.

The previous prime is 12306743. The next prime is 12306769. The reversal of 12306749 is 94760321.

12306749 = T₂₉₄ + T₂₉₅ + ... + T₄₆₂.

12306749 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12306749 - 2¹⁶ = 12241213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12306743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119432 + ... + 119534.

It is an arithmetic number, because the mean of its divisors is an integer number (647088).

Almost surely, 2^12306749 is an apocalyptic number.

It is an amenable number.

12306749 is a deficient number, since it is larger than the sum of its proper divisors (3223363).

12306749 is a wasteful number, since it uses less digits than its factorization.

12306749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 12306749 is about 3508.0976326208. The cubic root of 12306749 is about 230.8772359191.

The spelling of 12306749 in words is "twelve million, three hundred six thousand, seven hundred forty-nine".