28866120 has 32 divisors (see below), whose sum is σ = 86598720. Its totient is φ = 7697600.

The previous prime is 28866109. The next prime is 28866151. The reversal of 28866120 is 2166882.

It is a super-3 number, since 3×28866120³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120156 + ... + 120395.

It is an arithmetic number, because the mean of its divisors is an integer number (2706210).

Almost surely, 2^28866120 is an apocalyptic number.

28866120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28866120 is an abundant number, since it is smaller than the sum of its proper divisors (57732600).

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

28866120 is a wasteful number, since it uses less digits than its factorization.

28866120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240565 (or 240561 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 28866120 is about 5372.7199815364. The cubic root of 28866120 is about 306.7581695022.

The spelling of 28866120 in words is "twenty-eight million, eight hundred sixty-six thousand, one hundred twenty".