1222626276 has 18 divisors (see below), whose sum is σ = 3090527622. Its totient is φ = 407542080.

The previous prime is 1222626257. The next prime is 1222626299. The reversal of 1222626276 is 6726262221.

1222626276 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 626 + 27 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1204784100 + 17842176 = 34710^2 + 4224^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 33961841 = 1222626276 / (1 + 2 + 2 + 2 + 6 + 2 + 6 + 2 + 7 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 1222626276.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16980885 + ... + 16980956.

It is an arithmetic number, because the mean of its divisors is an integer number (171695979).

Almost surely, 2^1222626276 is an apocalyptic number.

It is an amenable number.

1222626276 is an abundant number, since it is smaller than the sum of its proper divisors (1867901346).

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

1222626276 is a wasteful number, since it uses less digits than its factorization.

1222626276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33961851 (or 33961846 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 1222626276 is about 34966.0732139026. The cubic root of 1222626276 is about 1069.2959166871.

Adding to 1222626276 its reverse (6726262221), we get a palindrome (7948888497).

The spelling of 1222626276 in words is "one billion, two hundred twenty-two million, six hundred twenty-six thousand, two hundred seventy-six".