1222289750 has 32 divisors (see below), whose sum is σ = 2496143520. Its totient is φ = 444468000.

The previous prime is 1222289683. The next prime is 1222289753. The reversal of 1222289750 is 579822221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222289753) 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, 219485 + ... + 224984.

It is an arithmetic number, because the mean of its divisors is an integer number (78004485).

Almost surely, 2^1222289750 is an apocalyptic number.

1222289750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222289750 is an abundant number, since it is smaller than the sum of its proper divisors (1273853770).

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

1222289750 is a wasteful number, since it uses less digits than its factorization.

1222289750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444497 (or 444487 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1222289750 is about 34961.2607038133. The cubic root of 1222289750 is about 1069.1978003328.

The spelling of 1222289750 in words is "one billion, two hundred twenty-two million, two hundred eighty-nine thousand, seven hundred fifty".