1228364544 has 144 divisors (see below), whose sum is σ = 3605616000. Its totient is φ = 368148480.

The previous prime is 1228364509. The next prime is 1228364567. The reversal of 1228364544 is 4454638221.

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 15 ways as a sum of consecutive naturals, for example, 818707 + ... + 820205.

It is an arithmetic number, because the mean of its divisors is an integer number (25039000).

Almost surely, 2^1228364544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228364544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1802808000).

1228364544 is an abundant number, since it is smaller than the sum of its proper divisors (2377251456).

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

1228364544 is a wasteful number, since it uses less digits than its factorization.

1228364544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626 (or 1612 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The square root of 1228364544 is about 35048.0319561598. The cubic root of 1228364544 is about 1070.9661823555.

The spelling of 1228364544 in words is "one billion, two hundred twenty-eight million, three hundred sixty-four thousand, five hundred forty-four".