87928219 has 8 divisors (see below), whose sum is σ = 94303440. Its totient is φ = 81727776.

The previous prime is 87928207. The next prime is 87928271. The reversal of 87928219 is 91282978.

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 87928219 - 2¹⁷ = 87797147 is a prime.

It is a super-2 number, since 2×87928219² = 15462743393023922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87928019) 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 7 ways as a sum of consecutive naturals, for example, 42652 + ... + 44665.

It is an arithmetic number, because the mean of its divisors is an integer number (11787930).

Almost surely, 2^87928219 is an apocalyptic number.

87928219 is a deficient number, since it is larger than the sum of its proper divisors (6375221).

87928219 is a wasteful number, since it uses less digits than its factorization.

87928219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87389.

The product of its digits is 145152, while the sum is 46.

The square root of 87928219 is about 9377.0047989750. The cubic root of 87928219 is about 444.6750461895.

The spelling of 87928219 in words is "eighty-seven million, nine hundred twenty-eight thousand, two hundred nineteen".