28554529 has 6 divisors (see below), whose sum is σ = 28991634. Its totient is φ = 28123920.

The previous prime is 28554497. The next prime is 28554551. The reversal of 28554529 is 92545582.

It can be written as a sum of positive squares in only one way, i.e., 21372129 + 7182400 = 4623^2 + 2680^2 .

It is not a de Polignac number, because 28554529 - 2⁵ = 28554497 is a prime.

It is a super-3 number, since 3×28554529³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28554491 and 28554500.

It is not an unprimeable number, because it can be changed into a prime (28594529) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1309 + ... + 7669.

It is an arithmetic number, because the mean of its divisors is an integer number (4831939).

Almost surely, 2^28554529 is an apocalyptic number.

It is an amenable number.

28554529 is a deficient number, since it is larger than the sum of its proper divisors (437105).

28554529 is an frugal number, since it uses more digits than its factorization.

28554529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6495 (or 6428 counting only the distinct ones).

The product of its digits is 144000, while the sum is 40.

The square root of 28554529 is about 5343.6437942662. The cubic root of 28554529 is about 305.6504224123.

The spelling of 28554529 in words is "twenty-eight million, five hundred fifty-four thousand, five hundred twenty-nine".