28371995 has 8 divisors (see below), whose sum is σ = 35526816. Its totient is φ = 21710656.

The previous prime is 28371991. The next prime is 28372009. The reversal of 28371995 is 59917382.

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 28371995 - 2² = 28371991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28371991) 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, 123242 + ... + 123471.

It is an arithmetic number, because the mean of its divisors is an integer number (4440852).

Almost surely, 2^28371995 is an apocalyptic number.

28371995 is a deficient number, since it is larger than the sum of its proper divisors (7154821).

28371995 is a wasteful number, since it uses less digits than its factorization.

28371995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246741.

The product of its digits is 136080, while the sum is 44.

The square root of 28371995 is about 5326.5368674215. The cubic root of 28371995 is about 304.9977425256.

The spelling of 28371995 in words is "twenty-eight million, three hundred seventy-one thousand, nine hundred ninety-five".