49889728 has 56 divisors (see below), whose sum is σ = 113926112. Its totient is φ = 21233664.

The previous prime is 49889689. The next prime is 49889729. The reversal of 49889728 is 82798894.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49889729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86176 + ... + 86752.

Almost surely, 2^49889728 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 49889728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56963056).

49889728 is an abundant number, since it is smaller than the sum of its proper divisors (64036384).

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

49889728 is a wasteful number, since it uses less digits than its factorization.

49889728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 779 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The square root of 49889728 is about 7063.2661000418. The cubic root of 49889728 is about 368.1321201721.

The spelling of 49889728 in words is "forty-nine million, eight hundred eighty-nine thousand, seven hundred twenty-eight".