1226326860 has 144 divisors (see below), whose sum is σ = 4068503712. Its totient is φ = 296524800.

The previous prime is 1226326837. The next prime is 1226326877. The reversal of 1226326860 is 686236221.

1226326860 is a `hidden beast` number, since 12 + 2 + 632 + 6 + 8 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1308312 + ... + 1309248.

It is an arithmetic number, because the mean of its divisors is an integer number (28253498).

Almost surely, 2^1226326860 is an apocalyptic number.

1226326860 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 1226326860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2034251856).

1226326860 is an abundant number, since it is smaller than the sum of its proper divisors (2842176852).

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

1226326860 is a wasteful number, since it uses less digits than its factorization.

1226326860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624 (or 1619 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1226326860 is about 35018.9500128145. The cubic root of 1226326860 is about 1070.3736605120.

The spelling of 1226326860 in words is "one billion, two hundred twenty-six million, three hundred twenty-six thousand, eight hundred sixty".