12137286 has 64 divisors (see below), whose sum is σ = 29859840. Its totient is φ = 3210240.

The previous prime is 12137273. The next prime is 12137287. The reversal of 12137286 is 68273121.

12137286 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12137286² = 294627422891592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12137287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63451 + ... + 63641.

It is an arithmetic number, because the mean of its divisors is an integer number (466560).

Almost surely, 2^12137286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12137286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14929920).

12137286 is an abundant number, since it is smaller than the sum of its proper divisors (17722554).

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

12137286 is a wasteful number, since it uses less digits than its factorization.

12137286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309.

The product of its digits is 4032, while the sum is 30.

The square root of 12137286 is about 3483.8607894117. The cubic root of 12137286 is about 229.8126135989.

The spelling of 12137286 in words is "twelve million, one hundred thirty-seven thousand, two hundred eighty-six".