28089792 has 42 divisors (see below), whose sum is σ = 80515968. Its totient is φ = 9363072.

The previous prime is 28089779. The next prime is 28089811. The reversal of 28089792 is 29798082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23808 + ... + 24959.

Almost surely, 2^28089792 is an apocalyptic number.

It is an amenable number.

28089792 is an abundant number, since it is smaller than the sum of its proper divisors (52426176).

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

28089792 is a wasteful number, since it uses less digits than its factorization.

28089792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48785 (or 48772 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 28089792 is about 5299.9803773222. The cubic root of 28089792 is about 303.9831477269.

The spelling of 28089792 in words is "twenty-eight million, eighty-nine thousand, seven hundred ninety-two".