13028545 has 8 divisors (see below), whose sum is σ = 16554024. Its totient is φ = 9809664.

The previous prime is 13028539. The next prime is 13028581. The reversal of 13028545 is 54582031.

It can be written as a sum of positive squares in 4 ways, for example, as 2985984 + 10042561 = 1728^2 + 3169^2 .

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 13028545 - 2⁷ = 13028417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76554 + ... + 76723.

It is an arithmetic number, because the mean of its divisors is an integer number (2069253).

Almost surely, 2^13028545 is an apocalyptic number.

It is an amenable number.

13028545 is a deficient number, since it is larger than the sum of its proper divisors (3525479).

13028545 is a wasteful number, since it uses less digits than its factorization.

13028545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153299.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 13028545 is about 3609.5075841450. The cubic root of 13028545 is about 235.3054425738.

The spelling of 13028545 in words is "thirteen million, twenty-eight thousand, five hundred forty-five".