13749744 has 20 divisors (see below), whose sum is σ = 35520296. Its totient is φ = 4583232.

The previous prime is 13749733. The next prime is 13749761. The reversal of 13749744 is 44794731.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 143179 + ... + 143274.

Almost surely, 2^13749744 is an apocalyptic number.

It is an amenable number.

13749744 is an abundant number, since it is smaller than the sum of its proper divisors (21770552).

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

13749744 is a wasteful number, since it uses less digits than its factorization.

13749744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286464 (or 286458 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

The square root of 13749744 is about 3708.0647243542. The cubic root of 13749744 is about 239.5695060518.

The spelling of 13749744 in words is "thirteen million, seven hundred forty-nine thousand, seven hundred forty-four".