28514705 has 4 divisors (see below), whose sum is σ = 34217652. Its totient is φ = 22811760.

The previous prime is 28514693. The next prime is 28514711. The reversal of 28514705 is 50741582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4739329 + 23775376 = 2177^2 + 4876^2 .

It is not a de Polignac number, because 28514705 - 2⁸ = 28514449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2851466 + ... + 2851475.

It is an arithmetic number, because the mean of its divisors is an integer number (8554413).

Almost surely, 2^28514705 is an apocalyptic number.

It is an amenable number.

28514705 is a deficient number, since it is larger than the sum of its proper divisors (5702947).

28514705 is an equidigital number, since it uses as much as digits as its factorization.

28514705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5702946.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 28514705 is about 5339.9161978443. The cubic root of 28514705 is about 305.5082629959.

The spelling of 28514705 in words is "twenty-eight million, five hundred fourteen thousand, seven hundred five".