28975436 has 12 divisors (see below), whose sum is σ = 57950928. Its totient is φ = 12418032.

The previous prime is 28975417. The next prime is 28975439. The reversal of 28975436 is 63457982.

28975436 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28975439) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 517391 + ... + 517446.

It is an arithmetic number, because the mean of its divisors is an integer number (4829244).

Almost surely, 2^28975436 is an apocalyptic number.

It is an amenable number.

28975436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28975436 is a wasteful number, since it uses less digits than its factorization.

28975436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034848 (or 1034846 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 28975436 is about 5382.8836138263. The cubic root of 28975436 is about 307.1449127885.

The spelling of 28975436 in words is "twenty-eight million, nine hundred seventy-five thousand, four hundred thirty-six".