1226847564 has 36 divisors (see below), whose sum is σ = 3140460960. Its totient is φ = 403771680.

The previous prime is 1226847541. The next prime is 1226847569. The reversal of 1226847564 is 4657486221.

1226847564 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 84 + 7 + 564 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1226847569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212847 + ... + 218534.

Almost surely, 2^1226847564 is an apocalyptic number.

It is an amenable number.

1226847564 is an abundant number, since it is smaller than the sum of its proper divisors (1913613396).

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

1226847564 is a wasteful number, since it uses less digits than its factorization.

1226847564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431470 (or 431465 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 1226847564 is about 35026.3838270524. The cubic root of 1226847564 is about 1070.5251342610.

The spelling of 1226847564 in words is "one billion, two hundred twenty-six million, eight hundred forty-seven thousand, five hundred sixty-four".