49045128 has 64 divisors (see below), whose sum is σ = 137401920. Its totient is φ = 14457600.

The previous prime is 49045103. The next prime is 49045133. The reversal of 49045128 is 82154094.

49045128 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 (33).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7258 + ... + 12278.

It is an arithmetic number, because the mean of its divisors is an integer number (2146905).

Almost surely, 2^49045128 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 49045128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68700960).

49045128 is an abundant number, since it is smaller than the sum of its proper divisors (88356792).

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

49045128 is a wasteful number, since it uses less digits than its factorization.

49045128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5078 (or 5074 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 49045128 is about 7003.2226867350. Note that the first 3 decimals coincide. The cubic root of 49045128 is about 366.0428747288.

The spelling of 49045128 in words is "forty-nine million, forty-five thousand, one hundred twenty-eight".