12388530 has 128 divisors (see below), whose sum is σ = 38486016. Its totient is φ = 2476800.

The previous prime is 12388511. The next prime is 12388547. The reversal of 12388530 is 3588321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71524 + ... + 71696.

It is an arithmetic number, because the mean of its divisors is an integer number (300672).

Almost surely, 2^12388530 is an apocalyptic number.

12388530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12388530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19243008).

12388530 is an abundant number, since it is smaller than the sum of its proper divisors (26097486).

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

12388530 is a wasteful number, since it uses less digits than its factorization.

12388530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 12388530 is about 3519.7343649770. The cubic root of 12388530 is about 231.3875169408.

The spelling of 12388530 in words is "twelve million, three hundred eighty-eight thousand, five hundred thirty".