1224641788 has 12 divisors (see below), whose sum is σ = 2143702512. Its totient is φ = 612155360.

The previous prime is 1224641779. The next prime is 1224641791. The reversal of 1224641788 is 8871464221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23920 + ... + 54967.

It is an arithmetic number, because the mean of its divisors is an integer number (178641876).

Almost surely, 2^1224641788 is an apocalyptic number.

It is an amenable number.

1224641788 is a deficient number, since it is larger than the sum of its proper divisors (919060724).

1224641788 is a wasteful number, since it uses less digits than its factorization.

1224641788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82772 (or 82770 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 1224641788 is about 34994.8823115609. The cubic root of 1224641788 is about 1069.8831758791.

The spelling of 1224641788 in words is "one billion, two hundred twenty-four million, six hundred forty-one thousand, seven hundred eighty-eight".