87028843 has 4 divisors (see below), whose sum is σ = 94940568. Its totient is φ = 79117120.

The previous prime is 87028829. The next prime is 87028853. The reversal of 87028843 is 34882078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87028843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87028796 and 87028805.

It is not an unprimeable number, because it can be changed into a prime (87028853) 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 3 ways as a sum of consecutive naturals, for example, 3955846 + ... + 3955867.

It is an arithmetic number, because the mean of its divisors is an integer number (23735142).

Almost surely, 2^87028843 is an apocalyptic number.

87028843 is a deficient number, since it is larger than the sum of its proper divisors (7911725).

87028843 is a wasteful number, since it uses less digits than its factorization.

87028843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7911724.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 87028843 is about 9328.9250720541. The cubic root of 87028843 is about 443.1537240795.

The spelling of 87028843 in words is "eighty-seven million, twenty-eight thousand, eight hundred forty-three".