49531728 has 20 divisors (see below), whose sum is σ = 127957088. Its totient is φ = 16510560.

The previous prime is 49531723. The next prime is 49531771. The reversal of 49531728 is 82713594.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49531721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515908 + ... + 516003.

Almost surely, 2^49531728 is an apocalyptic number.

49531728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

49531728 is an abundant number, since it is smaller than the sum of its proper divisors (78425360).

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

49531728 is a wasteful number, since it uses less digits than its factorization.

49531728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031922 (or 1031916 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 49531728 is about 7037.8780893107. The cubic root of 49531728 is about 367.2494548472.

It can be divided in two parts, 495 and 31728, that added together give a palindrome (32223).

The spelling of 49531728 in words is "forty-nine million, five hundred thirty-one thousand, seven hundred twenty-eight".