28998543 has 12 divisors (see below), whose sum is σ = 44977560. Its totient is φ = 16570512.

The previous prime is 28998533. The next prime is 28998581. The reversal of 28998543 is 34589982.

It is not a de Polignac number, because 28998543 - 2⁴ = 28998527 is a prime.

It is a super-2 number, since 2×28998543² = 1681830992245698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28998492 and 28998501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28998523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98488 + ... + 98781.

It is an arithmetic number, because the mean of its divisors is an integer number (3748130).

Almost surely, 2^28998543 is an apocalyptic number.

28998543 is a deficient number, since it is larger than the sum of its proper divisors (15979017).

28998543 is a wasteful number, since it uses less digits than its factorization.

28998543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197286 (or 197279 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 28998543 is about 5385.0295263814. The cubic root of 28998543 is about 307.2265372346.

The spelling of 28998543 in words is "twenty-eight million, nine hundred ninety-eight thousand, five hundred forty-three".