78422411 has 16 divisors (see below), whose sum is σ = 86220288. Its totient is φ = 71030400.

The previous prime is 78422389. The next prime is 78422417. The reversal of 78422411 is 11422487.

It is a cyclic number.

It is not a de Polignac number, because 78422411 - 2¹⁸ = 78160267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78422417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51146 + ... + 52656.

It is an arithmetic number, because the mean of its divisors is an integer number (5388768).

Almost surely, 2^78422411 is an apocalyptic number.

78422411 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

78422411 is a deficient number, since it is larger than the sum of its proper divisors (7797877).

78422411 is a wasteful number, since it uses less digits than its factorization.

78422411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642.

The product of its digits is 3584, while the sum is 29.

The square root of 78422411 is about 8855.6428902706. The cubic root of 78422411 is about 428.0357697854.

Adding to 78422411 its reverse (11422487), we get a palindrome (89844898).

The spelling of 78422411 in words is "seventy-eight million, four hundred twenty-two thousand, four hundred eleven".