1226174840 has 64 divisors (see below), whose sum is σ = 3033538560. Its totient is φ = 442350720.

The previous prime is 1226174809. The next prime is 1226174843. The reversal of 1226174840 is 484716221.

It is a self number, because there is not a number n which added to its sum of digits gives 1226174840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226174843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44909 + ... + 66851.

It is an arithmetic number, because the mean of its divisors is an integer number (47399040).

Almost surely, 2^1226174840 is an apocalyptic number.

1226174840 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 1226174840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516769280).

1226174840 is an abundant number, since it is smaller than the sum of its proper divisors (1807363720).

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

1226174840 is a wasteful number, since it uses less digits than its factorization.

1226174840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22092 (or 22088 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 1226174840 is about 35016.7794064503. The cubic root of 1226174840 is about 1070.3294295289.

The spelling of 1226174840 in words is "one billion, two hundred twenty-six million, one hundred seventy-four thousand, eight hundred forty".