49780836 has 144 divisors (see below), whose sum is σ = 156024960. Its totient is φ = 13063680.

The previous prime is 49780831. The next prime is 49780867. The reversal of 49780836 is 63808794.

It is a happy number.

49780836 is a `hidden beast` number, since 497 + 80 + 83 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 49780791 and 49780800.

It is not an unprimeable number, because it can be changed into a prime (49780831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177016 + ... + 177296.

Almost surely, 2^49780836 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 49780836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78012480).

49780836 is an abundant number, since it is smaller than the sum of its proper divisors (106244124).

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

49780836 is a wasteful number, since it uses less digits than its factorization.

49780836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 49780836 is about 7055.5535573051. The cubic root of 49780836 is about 367.8640900923.

The spelling of 49780836 in words is "forty-nine million, seven hundred eighty thousand, eight hundred thirty-six".