12440034 has 32 divisors (see below), whose sum is σ = 27915840. Its totient is φ = 4106016.

The previous prime is 12440027. The next prime is 12440053. The reversal of 12440034 is 43004421.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12439989 and 12440016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4702 + ... + 6854.

It is an arithmetic number, because the mean of its divisors is an integer number (872370).

Almost surely, 2^12440034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12440034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13957920).

12440034 is an abundant number, since it is smaller than the sum of its proper divisors (15475806).

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

12440034 is a wasteful number, since it uses less digits than its factorization.

12440034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271 (or 2265 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12440034 is about 3527.0432376142. The cubic root of 12440034 is about 231.7077299557.

Adding to 12440034 its reverse (43004421), we get a palindrome (55444455).

The spelling of 12440034 in words is "twelve million, four hundred forty thousand, thirty-four".