12299140 has 48 divisors (see below), whose sum is σ = 30038400. Its totient is φ = 4142592.

The previous prime is 12299129. The next prime is 12299141. The reversal of 12299140 is 4199221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 12299099 and 12299108.

It is not an unprimeable number, because it can be changed into a prime (12299141) 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 15 ways as a sum of consecutive naturals, for example, 7516 + ... + 9004.

It is an arithmetic number, because the mean of its divisors is an integer number (625800).

Almost surely, 2^12299140 is an apocalyptic number.

12299140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12299140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15019200).

12299140 is an abundant number, since it is smaller than the sum of its proper divisors (17739260).

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

12299140 is a wasteful number, since it uses less digits than its factorization.

12299140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564 (or 1562 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 12299140 is about 3507.0129740279. The cubic root of 12299140 is about 230.8296439551.

The spelling of 12299140 in words is "twelve million, two hundred ninety-nine thousand, one hundred forty".