28027632 has 20 divisors (see below), whose sum is σ = 72404840. Its totient is φ = 9342528.

The previous prime is 28027621. The next prime is 28027697. The reversal of 28027632 is 23672082.

It is a self number, because there is not a number n which added to its sum of digits gives 28027632.

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, 291907 + ... + 292002.

It is an arithmetic number, because the mean of its divisors is an integer number (3620242).

Almost surely, 2^28027632 is an apocalyptic number.

It is an amenable number.

28027632 is an abundant number, since it is smaller than the sum of its proper divisors (44377208).

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

28027632 is a wasteful number, since it uses less digits than its factorization.

28027632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583920 (or 583914 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 28027632 is about 5294.1129568607. The cubic root of 28027632 is about 303.7587536640.

The spelling of 28027632 in words is "twenty-eight million, twenty-seven thousand, six hundred thirty-two".