28300219 has 2 divisors, whose sum is σ = 28300220. Its totient is φ = 28300218.

The previous prime is 28300213. The next prime is 28300231. The reversal of 28300219 is 91200382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28300219 - 2¹⁵ = 28267451 is a prime.

It is a super-2 number, since 2×28300219² = 1601804790895922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28300193 and 28300202.

It is not a weakly prime, because it can be changed into another prime (28300213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14150109 + 14150110.

It is an arithmetic number, because the mean of its divisors is an integer number (14150110).

Almost surely, 2^28300219 is an apocalyptic number.

28300219 is a deficient number, since it is larger than the sum of its proper divisors (1).

28300219 is an equidigital number, since it uses as much as digits as its factorization.

28300219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 28300219 is about 5319.7950148478. The cubic root of 28300219 is about 304.7403290153.

The spelling of 28300219 in words is "twenty-eight million, three hundred thousand, two hundred nineteen".