12340458 has 32 divisors (see below), whose sum is σ = 29534400. Its totient is φ = 3796848.

The previous prime is 12340429. The next prime is 12340459. The reversal of 12340458 is 85404321.

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

It is not an unprimeable number, because it can be changed into a prime (12340459) 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, 8088 + ... + 9491.

It is an arithmetic number, because the mean of its divisors is an integer number (922950).

Almost surely, 2^12340458 is an apocalyptic number.

12340458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12340458 is an abundant number, since it is smaller than the sum of its proper divisors (17193942).

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

12340458 is a wasteful number, since it uses less digits than its factorization.

12340458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17603 (or 17597 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 12340458 is about 3512.8988029831. The cubic root of 12340458 is about 231.0878397597.

Adding to 12340458 its reverse (85404321), we get a palindrome (97744779).

The spelling of 12340458 in words is "twelve million, three hundred forty thousand, four hundred fifty-eight".