12320240 has 40 divisors (see below), whose sum is σ = 30332880. Its totient is φ = 4637696.

The previous prime is 12320239. The next prime is 12320267. The reversal of 12320240 is 4202321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3170 + ... + 5889.

It is an arithmetic number, because the mean of its divisors is an integer number (758322).

Almost surely, 2^12320240 is an apocalyptic number.

12320240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320240 is an abundant number, since it is smaller than the sum of its proper divisors (18012640).

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

12320240 is a wasteful number, since it uses less digits than its factorization.

12320240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9089 (or 9083 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 12320240 is about 3510.0199429633. The cubic root of 12320240 is about 230.9615697893.

Adding to 12320240 its reverse (4202321), we get a palindrome (16522561).

The spelling of 12320240 in words is "twelve million, three hundred twenty thousand, two hundred forty".