122664444 has 72 divisors (see below), whose sum is σ = 334776960. Its totient is φ = 34854624.

The previous prime is 122664413. The next prime is 122664449. The reversal of 122664444 is 444466221.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122664449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133017 + ... + 133935.

It is an arithmetic number, because the mean of its divisors is an integer number (4649680).

Almost surely, 2^122664444 is an apocalyptic number.

122664444 is a gapful number since it is divisible by the number (14) 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 122664444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167388480).

122664444 is an abundant number, since it is smaller than the sum of its proper divisors (212112516).

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

122664444 is a wasteful number, since it uses less digits than its factorization.

122664444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167 (or 1158 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

The square root of 122664444 is about 11075.3981418277. The cubic root of 122664444 is about 496.8663265445.

The spelling of 122664444 in words is "one hundred twenty-two million, six hundred sixty-four thousand, four hundred forty-four".