49218 has 16 divisors (see below), whose sum is σ = 106176. Its totient is φ = 15120.

The previous prime is 49211. The next prime is 49223. The reversal of 49218 is 81294.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49211) by changing a digit.

49218 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238 + ... + 393.

It is an arithmetic number, because the mean of its divisors is an integer number (6636).

2⁴⁹²¹⁸ is an apocalyptic number.

49218 is an abundant number, since it is smaller than the sum of its proper divisors (56958).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53088).

49218 is a wasteful number, since it uses less digits than its factorization.

49218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649.

The product of its digits is 576, while the sum is 24.

The square root of 49218 is about 221.8513015513. The cubic root of 49218 is about 36.6472440753.

Subtracting from 49218 its sum of digits (24), we obtain a palindrome (49194).

Adding to 49218 its product of digits (576), we get a palindrome (49794).

The spelling of 49218 in words is "forty-nine thousand, two hundred eighteen".