28158046 has 12 divisors (see below), whose sum is σ = 49133088. Its totient is φ = 12067692.

The previous prime is 28158017. The next prime is 28158047. The reversal of 28158046 is 64085182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28158047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 143566 + ... + 143761.

It is an arithmetic number, because the mean of its divisors is an integer number (4094424).

Almost surely, 2^28158046 is an apocalyptic number.

28158046 is a deficient number, since it is larger than the sum of its proper divisors (20975042).

28158046 is a wasteful number, since it uses less digits than its factorization.

28158046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287343 (or 287336 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28158046 is about 5306.4155510099. The cubic root of 28158046 is about 304.2291597956.

The spelling of 28158046 in words is "twenty-eight million, one hundred fifty-eight thousand, forty-six".