28868080 has 20 divisors (see below), whose sum is σ = 67118472. Its totient is φ = 11547200.

The previous prime is 28868071. The next prime is 28868083. The reversal of 28868080 is 8086882.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28868083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180346 + ... + 180505.

Almost surely, 2^28868080 is an apocalyptic number.

28868080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28868080 is an abundant number, since it is smaller than the sum of its proper divisors (38250392).

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

28868080 is a wasteful number, since it uses less digits than its factorization.

28868080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360864 (or 360858 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 28868080 is about 5372.9023813950. The cubic root of 28868080 is about 306.7651122711.

The spelling of 28868080 in words is "twenty-eight million, eight hundred sixty-eight thousand, eighty".