28091676 has 12 divisors (see below), whose sum is σ = 65547272. Its totient is φ = 9363888.

The previous prime is 28091663. The next prime is 28091677. The reversal of 28091676 is 67619082.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28091677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170475 + ... + 1170498.

Almost surely, 2^28091676 is an apocalyptic number.

It is an amenable number.

28091676 is an abundant number, since it is smaller than the sum of its proper divisors (37455596).

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

28091676 is a wasteful number, since it uses less digits than its factorization.

28091676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340980 (or 2340978 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 28091676 is about 5300.1581108491. The cubic root of 28091676 is about 303.9899436886.

The spelling of 28091676 in words is "twenty-eight million, ninety-one thousand, six hundred seventy-six".