28768080 has 160 divisors (see below), whose sum is σ = 103171968. Its totient is φ = 6553600.

The previous prime is 28768073. The next prime is 28768081. The reversal of 28768080 is 8086782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28768081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44560 + ... + 45200.

Almost surely, 2^28768080 is an apocalyptic number.

28768080 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 28768080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51585984).

28768080 is an abundant number, since it is smaller than the sum of its proper divisors (74403888).

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

28768080 is a wasteful number, since it uses less digits than its factorization.

28768080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 28768080 is about 5363.5883510948. The cubic root of 28768080 is about 306.4104875894.

The spelling of 28768080 in words is "twenty-eight million, seven hundred sixty-eight thousand, eighty".