28084158 has 20 divisors (see below), whose sum is σ = 62929680. Its totient is φ = 9361332.

The previous prime is 28084157. The next prime is 28084159. The reversal of 28084158 is 85148082.

It is an interprime number because it is at equal distance from previous prime (28084157) and next prime (28084159).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28084157) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 86518 + ... + 86841.

It is an arithmetic number, because the mean of its divisors is an integer number (3146484).

Almost surely, 2^28084158 is an apocalyptic number.

28084158 is an abundant number, since it is smaller than the sum of its proper divisors (34845522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28084158 is a wasteful number, since it uses less digits than its factorization.

28084158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173373 (or 173364 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 28084158 is about 5299.4488392662. The cubic root of 28084158 is about 303.9628229583.

The spelling of 28084158 in words is "twenty-eight million, eighty-four thousand, one hundred fifty-eight".