12409038 has 32 divisors (see below), whose sum is σ = 27925920. Its totient is φ = 4134888.

The previous prime is 12409037. The next prime is 12409091. The reversal of 12409038 is 83090421.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12409037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2956 + ... + 5792.

It is an arithmetic number, because the mean of its divisors is an integer number (872685).

Almost surely, 2^12409038 is an apocalyptic number.

12409038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12409038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13962960).

12409038 is an abundant number, since it is smaller than the sum of its proper divisors (15516882).

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

12409038 is an frugal number, since it uses more digits than its factorization.

12409038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860 (or 2842 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12409038 is about 3522.6464483397. The cubic root of 12409038 is about 231.5151263543.

Adding to 12409038 its reverse (83090421), we get a palindrome (95499459).

The spelling of 12409038 in words is "twelve million, four hundred nine thousand, thirty-eight".