28176890 has 16 divisors (see below), whose sum is σ = 57964032. Its totient is φ = 9660624.

The previous prime is 28176887. The next prime is 28176899. The reversal of 28176890 is 9867182.

It is not an unprimeable number, because it can be changed into a prime (28176899) 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 7 ways as a sum of consecutive naturals, for example, 201194 + ... + 201333.

It is an arithmetic number, because the mean of its divisors is an integer number (3622752).

Almost surely, 2^28176890 is an apocalyptic number.

28176890 is an abundant number, since it is smaller than the sum of its proper divisors (29787142).

28176890 is a wasteful number, since it uses less digits than its factorization.

28176890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402541.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 28176890 is about 5308.1908405784. The cubic root of 28176890 is about 304.2970103358.

The spelling of 28176890 in words is "twenty-eight million, one hundred seventy-six thousand, eight hundred ninety".