49815180 has 72 divisors (see below), whose sum is σ = 152552400. Its totient is φ = 13156992.

The previous prime is 49815179. The next prime is 49815187. The reversal of 49815180 is 8151894.

49815180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49815187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18351 + ... + 20889.

Almost surely, 2^49815180 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 49815180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76276200).

49815180 is an abundant number, since it is smaller than the sum of its proper divisors (102737220).

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

49815180 is a wasteful number, since it uses less digits than its factorization.

49815180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663 (or 2658 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 49815180 is about 7057.9869651339. The cubic root of 49815180 is about 367.9486676194.

The spelling of 49815180 in words is "forty-nine million, eight hundred fifteen thousand, one hundred eighty".