78226411 has 2 divisors, whose sum is σ = 78226412. Its totient is φ = 78226410.

The previous prime is 78226391. The next prime is 78226433. The reversal of 78226411 is 11462287.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78226411 is a prime.

It is a super-2 number, since 2×78226411² = 12238742755881842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78226441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39113205 + 39113206.

It is an arithmetic number, because the mean of its divisors is an integer number (39113206).

Almost surely, 2^78226411 is an apocalyptic number.

78226411 is a deficient number, since it is larger than the sum of its proper divisors (1).

78226411 is an equidigital number, since it uses as much as digits as its factorization.

78226411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

The square root of 78226411 is about 8844.5695768647. The cubic root of 78226411 is about 427.6788777544.

Adding to 78226411 its reverse (11462287), we get a palindrome (89688698).

The spelling of 78226411 in words is "seventy-eight million, two hundred twenty-six thousand, four hundred eleven".