1228133760 has 512 divisors, whose sum is σ = 4864665600. Its totient is φ = 257359872.

The previous prime is 1228133743. The next prime is 1228133807. The reversal of 1228133760 is 673318221.

It is a congruent number.

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, 8964412 + ... + 8964548.

It is an arithmetic number, because the mean of its divisors is an integer number (9501300).

Almost surely, 2^1228133760 is an apocalyptic number.

1228133760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228133760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2432332800).

1228133760 is an abundant number, since it is smaller than the sum of its proper divisors (3636531840).

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

1228133760 is a wasteful number, since it uses less digits than its factorization.

1228133760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1228133760 is about 35044.7394055085. The cubic root of 1228133760 is about 1070.8991074411.

The spelling of 1228133760 in words is "one billion, two hundred twenty-eight million, one hundred thirty-three thousand, seven hundred sixty".