12507738 has 16 divisors (see below), whose sum is σ = 26332320. Its totient is φ = 3949776.

The previous prime is 12507721. The next prime is 12507763. The reversal of 12507738 is 83770521.

It is a junction number, because it is equal to n+sod(n) for n = 12507699 and 12507708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54745 + ... + 54972.

It is an arithmetic number, because the mean of its divisors is an integer number (1645770).

Almost surely, 2^12507738 is an apocalyptic number.

12507738 is an abundant number, since it is smaller than the sum of its proper divisors (13824582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12507738 is a wasteful number, since it uses less digits than its factorization.

12507738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109741.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 12507738 is about 3536.6280550830. The cubic root of 12507738 is about 232.1273206215.

The spelling of 12507738 in words is "twelve million, five hundred seven thousand, seven hundred thirty-eight".