349638 has 16 divisors (see below), whose sum is σ = 736320. Its totient is φ = 110376.

The previous prime is 349637. The next prime is 349663. The reversal of 349638 is 836943.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 349599 and 349608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349637) 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, 1420 + ... + 1647.

It is an arithmetic number, because the mean of its divisors is an integer number (46020).

2³⁴⁹⁶³⁸ is an apocalyptic number.

349638 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

349638 is an abundant number, since it is smaller than the sum of its proper divisors (386682).

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

349638 is a wasteful number, since it uses less digits than its factorization.

349638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091.

The product of its digits is 15552, while the sum is 33.

The square root of 349638 is about 591.3019533200. The cubic root of 349638 is about 70.4486825380.

The spelling of 349638 in words is "three hundred forty-nine thousand, six hundred thirty-eight".