1228008705 has 64 divisors (see below), whose sum is σ = 2467584000. Its totient is φ = 506603520.

The previous prime is 1228008689. The next prime is 1228008731. The reversal of 1228008705 is 5078008221.

It is not a de Polignac number, because 1228008705 - 2⁴ = 1228008689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 156721 + ... + 164369.

It is an arithmetic number, because the mean of its divisors is an integer number (38556000).

Almost surely, 2^1228008705 is an apocalyptic number.

1228008705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1228008705 is an abundant number, since it is smaller than the sum of its proper divisors (1239575295).

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

1228008705 is a wasteful number, since it uses less digits than its factorization.

1228008705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7814.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 1228008705 is about 35042.9551407983. The cubic root of 1228008705 is about 1070.8627580254.

The spelling of 1228008705 in words is "one billion, two hundred twenty-eight million, eight thousand, seven hundred five".