28089452 has 12 divisors (see below), whose sum is σ = 49345296. Its totient is φ = 13990800.

The previous prime is 28089443. The next prime is 28089461. The reversal of 28089452 is 25498082.

It is an interprime number because it is at equal distance from previous prime (28089443) and next prime (28089461).

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, 12299 + ... + 14402.

It is an arithmetic number, because the mean of its divisors is an integer number (4112108).

Almost surely, 2^28089452 is an apocalyptic number.

It is an amenable number.

28089452 is a deficient number, since it is larger than the sum of its proper divisors (21255844).

28089452 is a wasteful number, since it uses less digits than its factorization.

28089452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26968 (or 26966 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 28089452 is about 5299.9483016346. The cubic root of 28089452 is about 303.9819212471.

The spelling of 28089452 in words is "twenty-eight million, eighty-nine thousand, four hundred fifty-two".