1226129982 has 64 divisors (see below), whose sum is σ = 3064449024. Its totient is φ = 317737440.

The previous prime is 1226129959. The next prime is 1226129987. The reversal of 1226129982 is 2899216221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226129987) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 212913 + ... + 218595.

It is an arithmetic number, because the mean of its divisors is an integer number (47882016).

Almost surely, 2^1226129982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226129982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1532224512).

1226129982 is an abundant number, since it is smaller than the sum of its proper divisors (1838319042).

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

1226129982 is a wasteful number, since it uses less digits than its factorization.

1226129982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6173.

The product of its digits is 62208, while the sum is 42.

The square root of 1226129982 is about 35016.1388790940. The cubic root of 1226129982 is about 1070.3163771698.

The spelling of 1226129982 in words is "one billion, two hundred twenty-six million, one hundred twenty-nine thousand, nine hundred eighty-two".