28861026 has 8 divisors (see below), whose sum is σ = 57722064. Its totient is φ = 9620340.

The previous prime is 28861013. The next prime is 28861043. The reversal of 28861026 is 62016882.

It is a sphenic number, since it is the product of 3 distinct primes.

28861026 is an admirable number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 2405080 + ... + 2405091.

It is an arithmetic number, because the mean of its divisors is an integer number (7215258).

Almost surely, 2^28861026 is an apocalyptic number.

28861026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28861026 is a wasteful number, since it uses less digits than its factorization.

28861026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810176.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 28861026 is about 5372.2458990631. The cubic root of 28861026 is about 306.7401239174.

The spelling of 28861026 in words is "twenty-eight million, eight hundred sixty-one thousand, twenty-six".