1226326528 has 80 divisors (see below), whose sum is σ = 2857852800. Its totient is φ = 525493248.

The previous prime is 1226326499. The next prime is 1226326537. The reversal of 1226326528 is 8256236221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172125 + ... + 179107.

It is an arithmetic number, because the mean of its divisors is an integer number (35723160).

Almost surely, 2^1226326528 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 1226326528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428926400).

1226326528 is an abundant number, since it is smaller than the sum of its proper divisors (1631526272).

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

1226326528 is an frugal number, since it uses more digits than its factorization.

1226326528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7022 (or 6992 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 1226326528 is about 35018.9452725236. The cubic root of 1226326528 is about 1070.3735639189.

The spelling of 1226326528 in words is "one billion, two hundred twenty-six million, three hundred twenty-six thousand, five hundred twenty-eight".