1228285717 has 8 divisors (see below), whose sum is σ = 1302523200. Its totient is φ = 1154268864.

The previous prime is 1228285687. The next prime is 1228285727. The reversal of 1228285717 is 7175828221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228285717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228285727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43617 + ... + 66022.

It is an arithmetic number, because the mean of its divisors is an integer number (162815400).

Almost surely, 2^1228285717 is an apocalyptic number.

1228285717 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1228285717 is a deficient number, since it is larger than the sum of its proper divisors (74237483).

1228285717 is a wasteful number, since it uses less digits than its factorization.

1228285717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110315.

The product of its digits is 125440, while the sum is 43.

The square root of 1228285717 is about 35046.9073813939. The cubic root of 1228285717 is about 1070.9432730713.

The spelling of 1228285717 in words is "one billion, two hundred twenty-eight million, two hundred eighty-five thousand, seven hundred seventeen".