1228704635 has 8 divisors (see below), whose sum is σ = 1552048080. Its totient is φ = 931228704.

The previous prime is 1228704619. The next prime is 1228704649. The reversal of 1228704635 is 5364078221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1228704635 - 2⁴ = 1228704619 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6466772 + ... + 6466961.

It is an arithmetic number, because the mean of its divisors is an integer number (194006010).

Almost surely, 2^1228704635 is an apocalyptic number.

1228704635 is a deficient number, since it is larger than the sum of its proper divisors (323343445).

1228704635 is a wasteful number, since it uses less digits than its factorization.

1228704635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12933757.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1228704635 is about 35052.8834049355. The cubic root of 1228704635 is about 1071.0650108759.

The spelling of 1228704635 in words is "one billion, two hundred twenty-eight million, seven hundred four thousand, six hundred thirty-five".