1222557688 has 16 divisors (see below), whose sum is σ = 2500686360. Its totient is φ = 555708000.

The previous prime is 1222557683. The next prime is 1222557697. The reversal of 1222557688 is 8867552221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222557683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6946263 + ... + 6946438.

Almost surely, 2^1222557688 is an apocalyptic number.

It is an amenable number.

1222557688 is an abundant number, since it is smaller than the sum of its proper divisors (1278128672).

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

1222557688 is a wasteful number, since it uses less digits than its factorization.

1222557688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13892718 (or 13892714 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The square root of 1222557688 is about 34965.0924208703. The cubic root of 1222557688 is about 1069.2759208684.

The spelling of 1222557688 in words is "one billion, two hundred twenty-two million, five hundred fifty-seven thousand, six hundred eighty-eight".