1328226705 has 48 divisors (see below), whose sum is σ = 2482648896. Its totient is φ = 653028480.

The previous prime is 1328226661. The next prime is 1328226737. The reversal of 1328226705 is 5076228231.

It is not a de Polignac number, because 1328226705 - 2⁷ = 1328226577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1328226705.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 866790 + ... + 868320.

It is an arithmetic number, because the mean of its divisors is an integer number (51721852).

Almost surely, 2^1328226705 is an apocalyptic number.

1328226705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1328226705 is a deficient number, since it is larger than the sum of its proper divisors (1154422191).

1328226705 is a wasteful number, since it uses less digits than its factorization.

1328226705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038 (or 3035 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1328226705 is about 36444.8446971585. The cubic root of 1328226705 is about 1099.2354756488.

The spelling of 1328226705 in words is "one billion, three hundred twenty-eight million, two hundred twenty-six thousand, seven hundred five".