12449720 has 32 divisors (see below), whose sum is σ = 28112400. Its totient is φ = 4962048.

The previous prime is 12449719. The next prime is 12449737. The reversal of 12449720 is 2794421.

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, 21596 + ... + 22164.

Almost surely, 2^12449720 is an apocalyptic number.

12449720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12449720 is an abundant number, since it is smaller than the sum of its proper divisors (15662680).

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

12449720 is a wasteful number, since it uses less digits than its factorization.

12449720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12449720 is about 3528.4160752383. The cubic root of 12449720 is about 231.7678514108.

The spelling of 12449720 in words is "twelve million, four hundred forty-nine thousand, seven hundred twenty".