28799995 has 20 divisors (see below), whose sum is σ = 40334400. Its totient is φ = 19740336.

The previous prime is 28799963. The next prime is 28800001. The reversal of 28799995 is 59999782.

It is not a de Polignac number, because 28799995 - 2⁵ = 28799963 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10806 + ... + 13204.

It is an arithmetic number, because the mean of its divisors is an integer number (2016720).

Almost surely, 2^28799995 is an apocalyptic number.

28799995 is a deficient number, since it is larger than the sum of its proper divisors (11534405).

28799995 is an frugal number, since it uses more digits than its factorization.

28799995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432 (or 2411 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 58.

The square root of 28799995 is about 5366.5626801520. The cubic root of 28799995 is about 306.5237552188.

The spelling of 28799995 in words is "twenty-eight million, seven hundred ninety-nine thousand, nine hundred ninety-five".