1226342992 has 120 divisors (see below), whose sum is σ = 2929128000. Its totient is φ = 497109312.

The previous prime is 1226342989. The next prime is 1226342993. The reversal of 1226342992 is 2992436221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226342993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1980859 + ... + 1981477.

It is an arithmetic number, because the mean of its divisors is an integer number (24409400).

Almost surely, 2^1226342992 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 1226342992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464564000).

1226342992 is an abundant number, since it is smaller than the sum of its proper divisors (1702785008).

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

1226342992 is an equidigital number, since it uses as much as digits as its factorization.

1226342992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 647 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 1226342992 is about 35019.1803444912. The cubic root of 1226342992 is about 1070.3783539840.

It can be divided in two parts, 12263 and 42992, that added together give a palindrome (55255).

The spelling of 1226342992 in words is "one billion, two hundred twenty-six million, three hundred forty-two thousand, nine hundred ninety-two".