10728505 has 8 divisors (see below), whose sum is σ = 13019400. Its totient is φ = 8486016.

The previous prime is 10728503. The next prime is 10728517. The reversal of 10728505 is 50582701.

10728505 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 4 ways, for example, as 514089 + 10214416 = 717^2 + 3196^2 .

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 10728505 - 2¹ = 10728503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10728503) 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, 11610 + ... + 12499.

It is an arithmetic number, because the mean of its divisors is an integer number (1627425).

Almost surely, 2^10728505 is an apocalyptic number.

It is an amenable number.

10728505 is a deficient number, since it is larger than the sum of its proper divisors (2290895).

10728505 is an equidigital number, since it uses as much as digits as its factorization.

10728505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24203.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 10728505 is about 3275.4396651442. The cubic root of 10728505 is about 220.5530506880.

The spelling of 10728505 in words is "ten million, seven hundred twenty-eight thousand, five hundred five".