49728505 has 8 divisors (see below), whose sum is σ = 60289992. Its totient is φ = 39372288.

The previous prime is 49728487. The next prime is 49728509. The reversal of 49728505 is 50582794.

It can be written as a sum of positive squares in 4 ways, for example, as 2572816 + 47155689 = 1604^2 + 6867^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49728505 - 2⁵ = 49728473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49728509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50782 + ... + 51751.

It is an arithmetic number, because the mean of its divisors is an integer number (7536249).

Almost surely, 2^49728505 is an apocalyptic number.

It is an amenable number.

49728505 is a deficient number, since it is larger than the sum of its proper divisors (10561487).

49728505 is a wasteful number, since it uses less digits than its factorization.

49728505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102635.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 49728505 is about 7051.8440850603. The cubic root of 49728505 is about 367.7351419079.

The spelling of 49728505 in words is "forty-nine million, seven hundred twenty-eight thousand, five hundred five".