28632686 has 16 divisors (see below), whose sum is σ = 44558640. Its totient is φ = 13799128.

The previous prime is 28632683. The next prime is 28632689. The reversal of 28632686 is 68623682.

It is an interprime number because it is at equal distance from previous prime (28632683) and next prime (28632689).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28632683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48485 + ... + 49071.

It is an arithmetic number, because the mean of its divisors is an integer number (2784915).

Almost surely, 2^28632686 is an apocalyptic number.

28632686 is a deficient number, since it is larger than the sum of its proper divisors (15925954).

28632686 is an frugal number, since it uses more digits than its factorization.

28632686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 618 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 28632686 is about 5350.9518779372. The cubic root of 28632686 is about 305.9290350481.

The spelling of 28632686 in words is "twenty-eight million, six hundred thirty-two thousand, six hundred eighty-six".