28095987 has 12 divisors (see below), whose sum is σ = 38506776. Its totient is φ = 18221760.

The previous prime is 28095973. The next prime is 28096001. The reversal of 28095987 is 78959082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28095973) and next prime (28096001).

It is not a de Polignac number, because 28095987 - 2⁶ = 28095923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28094987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 687 + ... + 7527.

It is an arithmetic number, because the mean of its divisors is an integer number (3208898).

Almost surely, 2^28095987 is an apocalyptic number.

28095987 is a deficient number, since it is larger than the sum of its proper divisors (10410789).

28095987 is an equidigital number, since it uses as much as digits as its factorization.

28095987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6918 (or 6881 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 28095987 is about 5300.5647812285. The cubic root of 28095987 is about 304.0054931775.

The spelling of 28095987 in words is "twenty-eight million, ninety-five thousand, nine hundred eighty-seven".