28970910 has 48 divisors (see below), whose sum is σ = 75613824. Its totient is φ = 7695936.

The previous prime is 28970891. The next prime is 28970939. The reversal of 28970910 is 1907982.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33139 + ... + 34001.

It is an arithmetic number, because the mean of its divisors is an integer number (1575288).

Almost surely, 2^28970910 is an apocalyptic number.

28970910 is an abundant number, since it is smaller than the sum of its proper divisors (46642914).

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

28970910 is a wasteful number, since it uses less digits than its factorization.

28970910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1246 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 28970910 is about 5382.4631907706. The cubic root of 28970910 is about 307.1289198136.

The spelling of 28970910 in words is "twenty-eight million, nine hundred seventy thousand, nine hundred ten".