13787642 has 8 divisors (see below), whose sum is σ = 22561632. Its totient is φ = 6267100.

The previous prime is 13787639. The next prime is 13787689. The reversal of 13787642 is 24678731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13787596 and 13787605.

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, 313334 + ... + 313377.

It is an arithmetic number, because the mean of its divisors is an integer number (2820204).

Almost surely, 2^13787642 is an apocalyptic number.

13787642 is a deficient number, since it is larger than the sum of its proper divisors (8773990).

13787642 is a wasteful number, since it uses less digits than its factorization.

13787642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626724.

The product of its digits is 56448, while the sum is 38.

The square root of 13787642 is about 3713.1714207669. The cubic root of 13787642 is about 239.7894101778.

The spelling of 13787642 in words is "thirteen million, seven hundred eighty-seven thousand, six hundred forty-two".