49878 has 24 divisors (see below), whose sum is σ = 115128. Its totient is φ = 15552.

The previous prime is 49877. The next prime is 49891. The reversal of 49878 is 87894.

49878 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225 + ... + 387.

It is an arithmetic number, because the mean of its divisors is an integer number (4797).

2⁴⁹⁸⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57564).

49878 is an abundant number, since it is smaller than the sum of its proper divisors (65250).

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

49878 is a wasteful number, since it uses less digits than its factorization.

49878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 185 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 49878 is about 223.3338308452. Note that the first 3 decimals coincide. The cubic root of 49878 is about 36.8103271268.

It can be divided in two parts, 498 and 78, that added together give a square (576 = 24²).

The spelling of 49878 in words is "forty-nine thousand, eight hundred seventy-eight".