13729642 has 16 divisors (see below), whose sum is σ = 22315392. Its totient is φ = 6310080.

The previous prime is 13729633. The next prime is 13729649. The reversal of 13729642 is 24692731.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 13729598 and 13729607.

It is not an unprimeable number, because it can be changed into a prime (13729649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3234 + ... + 6157.

It is an arithmetic number, because the mean of its divisors is an integer number (1394712).

Almost surely, 2^13729642 is an apocalyptic number.

13729642 is a deficient number, since it is larger than the sum of its proper divisors (8585750).

13729642 is a wasteful number, since it uses less digits than its factorization.

13729642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9453.

The product of its digits is 18144, while the sum is 34.

The square root of 13729642 is about 3705.3531545590. The cubic root of 13729642 is about 239.4526996343.

The spelling of 13729642 in words is "thirteen million, seven hundred twenty-nine thousand, six hundred forty-two".