28368870 has 16 divisors (see below), whose sum is σ = 68085360. Its totient is φ = 7565024.

The previous prime is 28368853. The next prime is 28368883. The reversal of 28368870 is 7886382.

It is a Curzon number.

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, 472785 + ... + 472844.

It is an arithmetic number, because the mean of its divisors is an integer number (4255335).

Almost surely, 2^28368870 is an apocalyptic number.

28368870 is an abundant number, since it is smaller than the sum of its proper divisors (39716490).

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

28368870 is a wasteful number, since it uses less digits than its factorization.

28368870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945639.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 28368870 is about 5326.2435167762. The cubic root of 28368870 is about 304.9865442420.

The spelling of 28368870 in words is "twenty-eight million, three hundred sixty-eight thousand, eight hundred seventy".