28668180 has 48 divisors (see below), whose sum is σ = 82865664. Its totient is φ = 7397760.

The previous prime is 28668173. The next prime is 28668181. The reversal of 28668180 is 8186682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28668181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5847 + ... + 9566.

It is an arithmetic number, because the mean of its divisors is an integer number (1726368).

Almost surely, 2^28668180 is an apocalyptic number.

28668180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28668180 is an abundant number, since it is smaller than the sum of its proper divisors (54197484).

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

28668180 is a wasteful number, since it uses less digits than its factorization.

28668180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15456 (or 15454 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28668180 is about 5354.2674568983. The cubic root of 28668180 is about 306.0553960113.

The spelling of 28668180 in words is "twenty-eight million, six hundred sixty-eight thousand, one hundred eighty".