28328535 has 40 divisors (see below), whose sum is σ = 51313680. Its totient is φ = 14950656.

The previous prime is 28328527. The next prime is 28328543. The reversal of 28328535 is 53582382.

It is an interprime number because it is at equal distance from previous prime (28328527) and next prime (28328543).

It is not a de Polignac number, because 28328535 - 2³ = 28328527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28328535.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 45456 + ... + 46074.

It is an arithmetic number, because the mean of its divisors is an integer number (1282842).

Almost surely, 2^28328535 is an apocalyptic number.

28328535 is a deficient number, since it is larger than the sum of its proper divisors (22985145).

28328535 is a wasteful number, since it uses less digits than its factorization.

28328535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 740 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 28328535 is about 5322.4557302057. The cubic root of 28328535 is about 304.8419318900.

The spelling of 28328535 in words is "twenty-eight million, three hundred twenty-eight thousand, five hundred thirty-five".