28436543 has 8 divisors (see below), whose sum is σ = 28722960. Its totient is φ = 28152000.

The previous prime is 28436539. The next prime is 28436557. The reversal of 28436543 is 34563482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28436543 - 2² = 28436539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28430543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69323 + ... + 69731.

It is an arithmetic number, because the mean of its divisors is an integer number (3590370).

Almost surely, 2^28436543 is an apocalyptic number.

28436543 is a deficient number, since it is larger than the sum of its proper divisors (286417).

28436543 is a wasteful number, since it uses less digits than its factorization.

28436543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937.

The product of its digits is 69120, while the sum is 35.

The square root of 28436543 is about 5332.5925214665. The cubic root of 28436543 is about 305.2288634299.

The spelling of 28436543 in words is "twenty-eight million, four hundred thirty-six thousand, five hundred forty-three".