78000211 has 4 divisors (see below), whose sum is σ = 78070792. Its totient is φ = 77929632.

The previous prime is 78000161. The next prime is 78000229. The reversal of 78000211 is 11200087.

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

It is a cyclic number.

It is not a de Polignac number, because 78000211 - 2¹¹ = 77998163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78000011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33606 + ... + 35851.

It is an arithmetic number, because the mean of its divisors is an integer number (19517698).

Almost surely, 2^78000211 is an apocalyptic number.

78000211 is a deficient number, since it is larger than the sum of its proper divisors (70581).

78000211 is a wasteful number, since it uses less digits than its factorization.

78000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70580.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 78000211 is about 8831.7728118425. The cubic root of 78000211 is about 427.2662534391.

Adding to 78000211 its reverse (11200087), we get a palindrome (89200298).

The spelling of 78000211 in words is "seventy-eight million, two hundred eleven", and thus it is an aban number.