1226568288 has 144 divisors (see below), whose sum is σ = 3693731328. Its totient is φ = 355449600.

The previous prime is 1226568283. The next prime is 1226568293. The reversal of 1226568288 is 8828656221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1226568283) and next prime (1226568293).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226568281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264873 + ... + 269463.

It is an arithmetic number, because the mean of its divisors is an integer number (25650912).

Almost surely, 2^1226568288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226568288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1846865664).

1226568288 is an abundant number, since it is smaller than the sum of its proper divisors (2467163040).

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

1226568288 is a wasteful number, since it uses less digits than its factorization.

1226568288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4649 (or 4630 counting only the distinct ones).

The product of its digits is 737280, while the sum is 48.

The square root of 1226568288 is about 35022.3969482387. The cubic root of 1226568288 is about 1070.4438976905.

The spelling of 1226568288 in words is "one billion, two hundred twenty-six million, five hundred sixty-eight thousand, two hundred eighty-eight".