28628312 has 8 divisors (see below), whose sum is σ = 53678100. Its totient is φ = 14314152.

The previous prime is 28628297. The next prime is 28628359. The reversal of 28628312 is 21382682.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1789262 + ... + 1789277.

Almost surely, 2^28628312 is an apocalyptic number.

It is an amenable number.

28628312 is a deficient number, since it is larger than the sum of its proper divisors (25049788).

28628312 is a wasteful number, since it uses less digits than its factorization.

28628312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3578545 (or 3578541 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 28628312 is about 5350.5431499989. The cubic root of 28628312 is about 305.9134560958.

The spelling of 28628312 in words is "twenty-eight million, six hundred twenty-eight thousand, three hundred twelve".