28305910 has 8 divisors (see below), whose sum is σ = 50950656. Its totient is φ = 11322360.

The previous prime is 28305863. The next prime is 28305913. The reversal of 28305910 is 1950382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28305913) 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, 1415286 + ... + 1415305.

It is an arithmetic number, because the mean of its divisors is an integer number (6368832).

Almost surely, 2^28305910 is an apocalyptic number.

28305910 is a deficient number, since it is larger than the sum of its proper divisors (22644746).

28305910 is a wasteful number, since it uses less digits than its factorization.

28305910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830598.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 28305910 is about 5320.3298769907. The cubic root of 28305910 is about 304.7607547816.

The spelling of 28305910 in words is "twenty-eight million, three hundred five thousand, nine hundred ten".