28265908 has 12 divisors (see below), whose sum is σ = 53962272. Its totient is φ = 12848120.

The previous prime is 28265903. The next prime is 28265927. The reversal of 28265908 is 80956282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28265903) 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, 321160 + ... + 321247.

It is an arithmetic number, because the mean of its divisors is an integer number (4496856).

Almost surely, 2^28265908 is an apocalyptic number.

It is an amenable number.

28265908 is a deficient number, since it is larger than the sum of its proper divisors (25696364).

28265908 is a wasteful number, since it uses less digits than its factorization.

28265908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642422 (or 642420 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 28265908 is about 5316.5691945088. The cubic root of 28265908 is about 304.6171241519.

The spelling of 28265908 in words is "twenty-eight million, two hundred sixty-five thousand, nine hundred eight".