28955760 has 160 divisors (see below), whose sum is σ = 97708032. Its totient is φ = 7065600.

The previous prime is 28955737. The next prime is 28955819. The reversal of 28955760 is 6755982.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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 31 ways as a sum of consecutive naturals, for example, 191685 + ... + 191835.

Almost surely, 2^28955760 is an apocalyptic number.

28955760 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 28955760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48854016).

28955760 is an abundant number, since it is smaller than the sum of its proper divisors (68752272).

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

28955760 is a wasteful number, since it uses less digits than its factorization.

28955760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 28955760 is about 5381.0556585116. The cubic root of 28955760 is about 307.0753739815.

The spelling of 28955760 in words is "twenty-eight million, nine hundred fifty-five thousand, seven hundred sixty".