49999728 has 80 divisors (see below), whose sum is σ = 135705600. Its totient is φ = 15844608.

The previous prime is 49999711. The next prime is 49999739. The reversal of 49999728 is 82799994.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83173 + ... + 83771.

It is an arithmetic number, because the mean of its divisors is an integer number (1696320).

Almost surely, 2^49999728 is an apocalyptic number.

49999728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49999728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67852800).

49999728 is an abundant number, since it is smaller than the sum of its proper divisors (85705872).

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

49999728 is a wasteful number, since it uses less digits than its factorization.

49999728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 688 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 57.

The square root of 49999728 is about 7071.0485785349. The cubic root of 49999728 is about 368.4024818251.

The spelling of 49999728 in words is "forty-nine million, nine hundred ninety-nine thousand, seven hundred twenty-eight".