1222394976 has 288 divisors, whose sum is σ = 4068320256. Its totient is φ = 357696000.

The previous prime is 1222394923. The next prime is 1222394989. The reversal of 1222394976 is 6794932221.

1222394976 is a `hidden beast` number, since 122 + 2 + 39 + 497 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2651386 + ... + 2651846.

It is an arithmetic number, because the mean of its divisors is an integer number (14126112).

Almost surely, 2^1222394976 is an apocalyptic number.

1222394976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222394976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2034160128).

1222394976 is an abundant number, since it is smaller than the sum of its proper divisors (2845925280).

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

1222394976 is a wasteful number, since it uses less digits than its factorization.

1222394976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 508 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 1222394976 is about 34962.7655656700. The cubic root of 1222394976 is about 1069.2284815957.

The spelling of 1222394976 in words is "one billion, two hundred twenty-two million, three hundred ninety-four thousand, nine hundred seventy-six".