28435788 has 18 divisors (see below), whose sum is σ = 71879444. Its totient is φ = 9478584.

The previous prime is 28435783. The next prime is 28435789. The reversal of 28435788 is 88753482.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (28435783) 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 5 ways as a sum of consecutive naturals, for example, 394906 + ... + 394977.

Almost surely, 2^28435788 is an apocalyptic number.

It is an amenable number.

28435788 is an abundant number, since it is smaller than the sum of its proper divisors (43443656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28435788 is a wasteful number, since it uses less digits than its factorization.

28435788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789893 (or 789888 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 28435788 is about 5332.5217299135. The cubic root of 28435788 is about 305.2261620956.

The spelling of 28435788 in words is "twenty-eight million, four hundred thirty-five thousand, seven hundred eighty-eight".