28519628 has 24 divisors (see below), whose sum is σ = 51953664. Its totient is φ = 13683600.

The previous prime is 28519613. The next prime is 28519639. The reversal of 28519628 is 82691582.

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 7 ways as a sum of consecutive naturals, for example, 14843 + ... + 16653.

It is an arithmetic number, because the mean of its divisors is an integer number (2164736).

Almost surely, 2^28519628 is an apocalyptic number.

It is an amenable number.

28519628 is a deficient number, since it is larger than the sum of its proper divisors (23434036).

28519628 is a wasteful number, since it uses less digits than its factorization.

28519628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973 (or 1971 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 28519628 is about 5340.3771402402. The cubic root of 28519628 is about 305.5258437568.

The spelling of 28519628 in words is "twenty-eight million, five hundred nineteen thousand, six hundred twenty-eight".