11778822 has 96 divisors (see below), whose sum is σ = 30551040. Its totient is φ = 3240000.

The previous prime is 11778797. The next prime is 11778847. The reversal of 11778822 is 22887711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11778797) and next prime (11778847).

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116572 + ... + 116672.

It is an arithmetic number, because the mean of its divisors is an integer number (318240).

Almost surely, 2^11778822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11778822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15275520).

11778822 is an abundant number, since it is smaller than the sum of its proper divisors (18772218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11778822 is a wasteful number, since it uses less digits than its factorization.

11778822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 167 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The square root of 11778822 is about 3432.0288460326. The cubic root of 11778822 is about 227.5275303801.

Subtracting 11778822 from its reverse (22887711), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 1177 and 8822, that added together give a palindrome (9999).

The spelling of 11778822 in words is "eleven million, seven hundred seventy-eight thousand, eight hundred twenty-two".