28528032236 has 18 divisors (see below), whose sum is σ = 54464745972. Its totient is φ = 12966778120.

The previous prime is 28528032217. The next prime is 28528032251. The reversal of 28528032236 is 63223082582.

It is a junction number, because it is equal to n+sod(n) for n = 28528032193 and 28528032202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1107641 + ... + 1133103.

Almost surely, 2^28528032236 is an apocalyptic number.

It is an amenable number.

28528032236 is a deficient number, since it is larger than the sum of its proper divisors (25936713736).

28528032236 is an frugal number, since it uses more digits than its factorization.

28528032236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50941 (or 25476 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 28528032236 in words is "twenty-eight billion, five hundred twenty-eight million, thirty-two thousand, two hundred thirty-six".