49569728 has 42 divisors (see below), whose sum is σ = 106536744. Its totient is φ = 22873344.

The previous prime is 49569721. The next prime is 49569743. The reversal of 49569728 is 82796594.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49569721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8525 + ... + 13107.

Almost surely, 2^49569728 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 49569728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53268372).

49569728 is an abundant number, since it is smaller than the sum of its proper divisors (56967016).

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

49569728 is a wasteful number, since it uses less digits than its factorization.

49569728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4621 (or 4598 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 49569728 is about 7040.5772490613. The cubic root of 49569728 is about 367.3433469346.

The spelling of 49569728 in words is "forty-nine million, five hundred sixty-nine thousand, seven hundred twenty-eight".