28697086 has 12 divisors (see below), whose sum is σ = 47315016. Its totient is φ = 13044020.

The previous prime is 28697083. The next prime is 28697093. The reversal of 28697086 is 68079682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28697083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59050 + ... + 59533.

It is an arithmetic number, because the mean of its divisors is an integer number (3942918).

Almost surely, 2^28697086 is an apocalyptic number.

28697086 is a deficient number, since it is larger than the sum of its proper divisors (18617930).

28697086 is a wasteful number, since it uses less digits than its factorization.

28697086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118607 (or 118596 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 28697086 is about 5356.9661189894. The cubic root of 28697086 is about 306.1582262286.

The spelling of 28697086 in words is "twenty-eight million, six hundred ninety-seven thousand, eighty-six".