1228355684 has 24 divisors (see below), whose sum is σ = 2170613760. Its totient is φ = 608198976.

The previous prime is 1228355683. The next prime is 1228355707. The reversal of 1228355684 is 4865538221.

It is not an unprimeable number, because it can be changed into a prime (1228355683) 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, 311477 + ... + 315395.

It is an arithmetic number, because the mean of its divisors is an integer number (90442240).

Almost surely, 2^1228355684 is an apocalyptic number.

It is an amenable number.

1228355684 is a deficient number, since it is larger than the sum of its proper divisors (942258076).

1228355684 is a wasteful number, since it uses less digits than its factorization.

1228355684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667 (or 4665 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The square root of 1228355684 is about 35047.9055579645. The cubic root of 1228355684 is about 1070.9636074458.

The spelling of 1228355684 in words is "one billion, two hundred twenty-eight million, three hundred fifty-five thousand, six hundred eighty-four".