12744990 has 96 divisors (see below), whose sum is σ = 35582976. Its totient is φ = 3157440.

The previous prime is 12744961. The next prime is 12745009. The reversal of 12744990 is 9944721.

12744990 is a `hidden beast` number, since 127 + 449 + 90 = 666.

12744990 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97225 + ... + 97355.

It is an arithmetic number, because the mean of its divisors is an integer number (370656).

Almost surely, 2^12744990 is an apocalyptic number.

12744990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12744990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17791488).

12744990 is an abundant number, since it is smaller than the sum of its proper divisors (22837986).

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

12744990 is a wasteful number, since it uses less digits than its factorization.

12744990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 12744990 is about 3570.0126050198. The cubic root of 12744990 is about 233.5858332365.

The spelling of 12744990 in words is "twelve million, seven hundred forty-four thousand, nine hundred ninety".