49785820 has 48 divisors (see below), whose sum is σ = 120153600. Its totient is φ = 16974144.

The previous prime is 49785811. The next prime is 49785863. The reversal of 49785820 is 2858794.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26967 + ... + 28753.

It is an arithmetic number, because the mean of its divisors is an integer number (2503200).

Almost surely, 2^49785820 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 49785820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60076800).

49785820 is an abundant number, since it is smaller than the sum of its proper divisors (70367780).

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

49785820 is a wasteful number, since it uses less digits than its factorization.

49785820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002 (or 2000 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 49785820 is about 7055.9067454155. The cubic root of 49785820 is about 367.8763663924.

It can be divided in two parts, 49785 and 820, that added together give a palindrome (50605).

The spelling of 49785820 in words is "forty-nine million, seven hundred eighty-five thousand, eight hundred twenty".