28019632 has 20 divisors (see below), whose sum is σ = 54512136. Its totient is φ = 13952000.

The previous prime is 28019611. The next prime is 28019639. The reversal of 28019632 is 23691082.

It is a junction number, because it is equal to n+sod(n) for n = 28019594 and 28019603.

It is not an unprimeable number, because it can be changed into a prime (28019639) 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, 528 + ... + 7504.

Almost surely, 2^28019632 is an apocalyptic number.

It is an amenable number.

28019632 is a deficient number, since it is larger than the sum of its proper divisors (26492504).

28019632 is a wasteful number, since it uses less digits than its factorization.

28019632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7236 (or 7230 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 28019632 is about 5293.3573467130. The cubic root of 28019632 is about 303.7298500297.

The spelling of 28019632 in words is "twenty-eight million, nineteen thousand, six hundred thirty-two".