28723595 has 4 divisors (see below), whose sum is σ = 34468320. Its totient is φ = 22978872.

The previous prime is 28723559. The next prime is 28723609. The reversal of 28723595 is 59532782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59532782 = 2 ⋅29766391.

It is a cyclic number.

It is not a de Polignac number, because 28723595 - 2¹⁶ = 28658059 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2872355 + ... + 2872364.

It is an arithmetic number, because the mean of its divisors is an integer number (8617080).

Almost surely, 2^28723595 is an apocalyptic number.

28723595 is a deficient number, since it is larger than the sum of its proper divisors (5744725).

28723595 is an equidigital number, since it uses as much as digits as its factorization.

28723595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744724.

The product of its digits is 151200, while the sum is 41.

The square root of 28723595 is about 5359.4398028152. The cubic root of 28723595 is about 306.2524686737.

The spelling of 28723595 in words is "twenty-eight million, seven hundred twenty-three thousand, five hundred ninety-five".