48728709 has 10 divisors (see below), whose sum is σ = 72792390. Its totient is φ = 32485752.

The previous prime is 48728699. The next prime is 48728723. The reversal of 48728709 is 90782784.

48728709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 30835809 + 17892900 = 5553^2 + 4230^2 .

It is not a de Polignac number, because 48728709 - 2⁸ = 48728453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48728759) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 300714 + ... + 300875.

It is an arithmetic number, because the mean of its divisors is an integer number (7279239).

Almost surely, 2^48728709 is an apocalyptic number.

It is an amenable number.

48728709 is a deficient number, since it is larger than the sum of its proper divisors (24063681).

48728709 is an equidigital number, since it uses as much as digits as its factorization.

48728709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601601 (or 601592 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 48728709 is about 6980.5951751982. The cubic root of 48728709 is about 365.2539897274.

The spelling of 48728709 in words is "forty-eight million, seven hundred twenty-eight thousand, seven hundred nine".