28840910 has 48 divisors (see below), whose sum is σ = 61313760. Its totient is φ = 9737280.

The previous prime is 28840907. The next prime is 28840921. The reversal of 28840910 is 1904882.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34376 + ... + 35204.

It is an arithmetic number, because the mean of its divisors is an integer number (1277370).

Almost surely, 2^28840910 is an apocalyptic number.

28840910 is an abundant number, since it is smaller than the sum of its proper divisors (32472850).

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

28840910 is a wasteful number, since it uses less digits than its factorization.

28840910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 28840910 is about 5370.3733575981. The cubic root of 28840910 is about 306.6688418770.

The spelling of 28840910 in words is "twenty-eight million, eight hundred forty thousand, nine hundred ten".