49686784 has 108 divisors (see below), whose sum is σ = 122682924. Its totient is φ = 19955712.

The previous prime is 49686779. The next prime is 49686797. The reversal of 49686784 is 48768694.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24285184 + 25401600 = 4928^2 + 5040^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213132 + ... + 213364.

It is an arithmetic number, because the mean of its divisors is an integer number (1135953).

Almost surely, 2^49686784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49686784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61341462).

49686784 is an abundant number, since it is smaller than the sum of its proper divisors (72996140).

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

49686784 is a wasteful number, since it uses less digits than its factorization.

49686784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 259 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 49686784 is about 7048.8853019467. The cubic root of 49686784 is about 367.6322728696.

The spelling of 49686784 in words is "forty-nine million, six hundred eighty-six thousand, seven hundred eighty-four".