28966520 has 64 divisors (see below), whose sum is σ = 72800640. Its totient is φ = 10281600.

The previous prime is 28966517. The next prime is 28966529. The reversal of 28966520 is 2566982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28966529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18155 + ... + 19685.

It is an arithmetic number, because the mean of its divisors is an integer number (1137510).

Almost surely, 2^28966520 is an apocalyptic number.

28966520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28966520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36400320).

28966520 is an abundant number, since it is smaller than the sum of its proper divisors (43834120).

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

28966520 is a wasteful number, since it uses less digits than its factorization.

28966520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596 (or 1592 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 28966520 is about 5382.0553694662. The cubic root of 28966520 is about 307.1134058139.

The spelling of 28966520 in words is "twenty-eight million, nine hundred sixty-six thousand, five hundred twenty".