128122344 has 64 divisors (see below), whose sum is σ = 406742400. Its totient is φ = 36605952.

The previous prime is 128122333. The next prime is 128122361. The reversal of 128122344 is 443221821.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40857 + ... + 43880.

It is an arithmetic number, because the mean of its divisors is an integer number (6355350).

Almost surely, 2^128122344 is an apocalyptic number.

128122344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128122344 is an abundant number, since it is smaller than the sum of its proper divisors (278620056).

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

128122344 is a wasteful number, since it uses less digits than its factorization.

128122344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84759 (or 84749 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 128122344 is about 11319.1140996104. The cubic root of 128122344 is about 504.1289352664.

The spelling of 128122344 in words is "one hundred twenty-eight million, one hundred twenty-two thousand, three hundred forty-four".