28870194 has 16 divisors (see below), whose sum is σ = 58065120. Its totient is φ = 9569280.

The previous prime is 28870189. The next prime is 28870211. The reversal of 28870194 is 49107882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12367 + ... + 14514.

It is an arithmetic number, because the mean of its divisors is an integer number (3629070).

Almost surely, 2^28870194 is an apocalyptic number.

28870194 is an abundant number, since it is smaller than the sum of its proper divisors (29194926).

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

28870194 is a wasteful number, since it uses less digits than its factorization.

28870194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27065.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 28870194 is about 5373.0991057303. The cubic root of 28870194 is about 306.7726001911.

The spelling of 28870194 in words is "twenty-eight million, eight hundred seventy thousand, one hundred ninety-four".