28075715 has 8 divisors (see below), whose sum is σ = 33750528. Its totient is φ = 22420800.

The previous prime is 28075703. The next prime is 28075717. The reversal of 28075715 is 51757082.

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

It is not a de Polignac number, because 28075715 - 2⁴ = 28075699 is a prime.

It is a super-2 number, since 2×28075715² = 1576491545522450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28075717) 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 7 ways as a sum of consecutive naturals, for example, 1667 + ... + 7676.

It is an arithmetic number, because the mean of its divisors is an integer number (4218816).

Almost surely, 2^28075715 is an apocalyptic number.

28075715 is a deficient number, since it is larger than the sum of its proper divisors (5674813).

28075715 is an equidigital number, since it uses as much as digits as its factorization.

28075715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9949.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 28075715 is about 5298.6521871132. The cubic root of 28075715 is about 303.9323595759.

The spelling of 28075715 in words is "twenty-eight million, seventy-five thousand, seven hundred fifteen".