28049916 has 24 divisors (see below), whose sum is σ = 67561984. Its totient is φ = 9048240.

The previous prime is 28049893. The next prime is 28049921. The reversal of 28049916 is 61994082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37330 + ... + 38073.

Almost surely, 2^28049916 is an apocalyptic number.

It is an amenable number.

28049916 is an abundant number, since it is smaller than the sum of its proper divisors (39512068).

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

28049916 is a wasteful number, since it uses less digits than its factorization.

28049916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75441 (or 75439 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 28049916 is about 5296.2171405636. The cubic root of 28049916 is about 303.8392357506.

It can be divided in two parts, 2804 and 9916, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 28049916 in words is "twenty-eight million, forty-nine thousand, nine hundred sixteen".