28020632 has 16 divisors (see below), whose sum is σ = 53060400. Its totient is φ = 13871200.

The previous prime is 28020631. The next prime is 28020659. The reversal of 28020632 is 23602082.

It is a junction number, because it is equal to n+sod(n) for n = 28020598 and 28020607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28020631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16532 + ... + 18147.

It is an arithmetic number, because the mean of its divisors is an integer number (3316275).

Almost surely, 2^28020632 is an apocalyptic number.

It is an amenable number.

28020632 is a deficient number, since it is larger than the sum of its proper divisors (25039768).

28020632 is a wasteful number, since it uses less digits than its factorization.

28020632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34786 (or 34782 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 28020632 is about 5293.4518038800. The cubic root of 28020632 is about 303.7334632848.

The spelling of 28020632 in words is "twenty-eight million, twenty thousand, six hundred thirty-two".