28554120 has 160 divisors (see below), whose sum is σ = 109771200. Its totient is φ = 6521472.

The previous prime is 28554079. The next prime is 28554139. The reversal of 28554120 is 2145582.

It is a happy number.

28554120 is nontrivially palindromic in base 11.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 39 ways as a sum of consecutive naturals, for example, 22051 + ... + 23309.

It is an arithmetic number, because the mean of its divisors is an integer number (686070).

Almost surely, 2^28554120 is an apocalyptic number.

28554120 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 28554120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54885600).

28554120 is an abundant number, since it is smaller than the sum of its proper divisors (81217080).

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

28554120 is a wasteful number, since it uses less digits than its factorization.

28554120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 28554120 is about 5343.6055243627. The cubic root of 28554120 is about 305.6489630802.

The spelling of 28554120 in words is "twenty-eight million, five hundred fifty-four thousand, one hundred twenty".