49994820 has 120 divisors (see below), whose sum is σ = 158721024. Its totient is φ = 13226976.

The previous prime is 49994783. The next prime is 49994827. The reversal of 49994820 is 2849994.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (49994827) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 393597 + ... + 393723.

Almost surely, 2^49994820 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 49994820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79360512).

49994820 is an abundant number, since it is smaller than the sum of its proper divisors (108726204).

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

49994820 is an equidigital number, since it uses as much as digits as its factorization.

49994820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 49994820 is about 7070.7015210656. The cubic root of 49994820 is about 368.3904272359.

The spelling of 49994820 in words is "forty-nine million, nine hundred ninety-four thousand, eight hundred twenty".