28064433 has 8 divisors (see below), whose sum is σ = 39620448. Its totient is φ = 17609024.

The previous prime is 28064417. The next prime is 28064437. The reversal of 28064433 is 33446082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28064433 - 2⁴ = 28064417 is a prime.

It is a super-2 number, since 2×28064433² = 1575224799222978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28064433.

It is not an unprimeable number, because it can be changed into a prime (28064437) by changing a digit.

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, 275091 + ... + 275192.

It is an arithmetic number, because the mean of its divisors is an integer number (4952556).

Almost surely, 2^28064433 is an apocalyptic number.

It is an amenable number.

28064433 is a deficient number, since it is larger than the sum of its proper divisors (11556015).

28064433 is a wasteful number, since it uses less digits than its factorization.

28064433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550303.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 28064433 is about 5297.5874697828. The cubic root of 28064433 is about 303.8916431978.

The spelling of 28064433 in words is "twenty-eight million, sixty-four thousand, four hundred thirty-three".