28945312 has 24 divisors (see below), whose sum is σ = 62167392. Its totient is φ = 13156800.

The previous prime is 28945309. The next prime is 28945327. The reversal of 28945312 is 21354982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40764 + ... + 41467.

It is an arithmetic number, because the mean of its divisors is an integer number (2590308).

Almost surely, 2^28945312 is an apocalyptic number.

28945312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28945312 is an abundant number, since it is smaller than the sum of its proper divisors (33222080).

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

28945312 is a wasteful number, since it uses less digits than its factorization.

28945312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82252 (or 82244 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 28945312 is about 5380.0847576967. The cubic root of 28945312 is about 307.0384359138.

The spelling of 28945312 in words is "twenty-eight million, nine hundred forty-five thousand, three hundred twelve".