12499380 has 96 divisors (see below), whose sum is σ = 39513600. Its totient is φ = 3279744.

The previous prime is 12499379. The next prime is 12499381. The reversal of 12499380 is 8399421.

It is an interprime number because it is at equal distance from previous prime (12499379) and next prime (12499381).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12499381) 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, 42514 + ... + 42806.

It is an arithmetic number, because the mean of its divisors is an integer number (411600).

Almost surely, 2^12499380 is an apocalyptic number.

12499380 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 12499380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19756800).

12499380 is an abundant number, since it is smaller than the sum of its proper divisors (27014220).

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

12499380 is a wasteful number, since it uses less digits than its factorization.

12499380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 12499380 is about 3535.4462236046. The cubic root of 12499380 is about 232.0756045704.

The spelling of 12499380 in words is "twelve million, four hundred ninety-nine thousand, three hundred eighty".