13742644 has 6 divisors (see below), whose sum is σ = 24049634. Its totient is φ = 6871320.

The previous prime is 13742639. The next prime is 13742657. The reversal of 13742644 is 44624731.

It can be written as a sum of positive squares in only one way, i.e., 7086244 + 6656400 = 2662^2 + 2580^2 .

It is a super-2 number, since 2×13742644² = 377720528221472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1717827 + ... + 1717834.

Almost surely, 2^13742644 is an apocalyptic number.

It is an amenable number.

13742644 is a deficient number, since it is larger than the sum of its proper divisors (10306990).

13742644 is a wasteful number, since it uses less digits than its factorization.

13742644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3435665 (or 3435663 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 13742644 is about 3707.1072280149. The cubic root of 13742644 is about 239.5282631906.

The spelling of 13742644 in words is "thirteen million, seven hundred forty-two thousand, six hundred forty-four".