28820632 has 16 divisors (see below), whose sum is σ = 55499760. Its totient is φ = 14020704.

The previous prime is 28820629. The next prime is 28820639. The reversal of 28820632 is 23602882.

It is a junction number, because it is equal to n+sod(n) for n = 28820594 and 28820603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28820639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48388 + ... + 48979.

It is an arithmetic number, because the mean of its divisors is an integer number (3468735).

Almost surely, 2^28820632 is an apocalyptic number.

It is an amenable number.

28820632 is a deficient number, since it is larger than the sum of its proper divisors (26679128).

28820632 is a wasteful number, since it uses less digits than its factorization.

28820632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97410 (or 97406 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28820632 is about 5368.4850749536. The cubic root of 28820632 is about 306.5969522270.

The spelling of 28820632 in words is "twenty-eight million, eight hundred twenty thousand, six hundred thirty-two".