28863486 has 32 divisors (see below), whose sum is σ = 64357920. Its totient is φ = 9588672.

The previous prime is 28863481. The next prime is 28863487. The reversal of 28863486 is 68436882.

It is a happy number.

28863486 is a `hidden beast` number, since 2 + 8 + 8 + 634 + 8 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28863481) 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 15 ways as a sum of consecutive naturals, for example, 19426 + ... + 20858.

It is an arithmetic number, because the mean of its divisors is an integer number (2011185).

Almost surely, 2^28863486 is an apocalyptic number.

28863486 is an abundant number, since it is smaller than the sum of its proper divisors (35494434).

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

28863486 is a wasteful number, since it uses less digits than its factorization.

28863486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817 (or 1811 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 28863486 is about 5372.4748487080. The cubic root of 28863486 is about 306.7488387759.

The spelling of 28863486 in words is "twenty-eight million, eight hundred sixty-three thousand, four hundred eighty-six".