28956760 has 64 divisors (see below), whose sum is σ = 78393600. Its totient is φ = 9403776.

The previous prime is 28956757. The next prime is 28956827. The reversal of 28956760 is 6765982.

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 15 ways as a sum of consecutive naturals, for example, 2599 + ... + 8041.

It is an arithmetic number, because the mean of its divisors is an integer number (1224900).

Almost surely, 2^28956760 is an apocalyptic number.

28956760 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 28956760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39196800).

28956760 is an abundant number, since it is smaller than the sum of its proper divisors (49436840).

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

28956760 is a wasteful number, since it uses less digits than its factorization.

28956760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5480 (or 5476 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 28956760 is about 5381.1485762800. The cubic root of 28956760 is about 307.0789089355.

The spelling of 28956760 in words is "twenty-eight million, nine hundred fifty-six thousand, seven hundred sixty".