28601886 has 8 divisors (see below), whose sum is σ = 57203784. Its totient is φ = 9533960.

The previous prime is 28601869. The next prime is 28601899. The reversal of 28601886 is 68810682.

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

28601886 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2383485 + ... + 2383496.

It is an arithmetic number, because the mean of its divisors is an integer number (7150473).

Almost surely, 2^28601886 is an apocalyptic number.

28601886 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.

28601886 is a wasteful number, since it uses less digits than its factorization.

28601886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4766986.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28601886 is about 5348.0731109438. The cubic root of 28601886 is about 305.8193003796.

The spelling of 28601886 in words is "twenty-eight million, six hundred one thousand, eight hundred eighty-six".