28066450 has 24 divisors (see below), whose sum is σ = 52840368. Its totient is φ = 11089680.

The previous prime is 28066433. The next prime is 28066453. The reversal of 28066450 is 5466082.

It is not an unprimeable number, because it can be changed into a prime (28066453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 769 + ... + 7531.

It is an arithmetic number, because the mean of its divisors is an integer number (2201682).

Almost surely, 2^28066450 is an apocalyptic number.

28066450 is a deficient number, since it is larger than the sum of its proper divisors (24773918).

28066450 is a wasteful number, since it uses less digits than its factorization.

28066450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6858 (or 6853 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 28066450 is about 5297.7778360365. Note that the first 3 decimals coincide. The cubic root of 28066450 is about 303.8989232874.

The spelling of 28066450 in words is "twenty-eight million, sixty-six thousand, four hundred fifty".