128226744 has 96 divisors (see below), whose sum is σ = 371280000. Its totient is φ = 39859776.

The previous prime is 128226743. The next prime is 128226773. The reversal of 128226744 is 447622821.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 128226699 and 128226708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128226743) 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, 90957 + ... + 92355.

It is an arithmetic number, because the mean of its divisors is an integer number (3867500).

Almost surely, 2^128226744 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 128226744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185640000).

128226744 is an abundant number, since it is smaller than the sum of its proper divisors (243053256).

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

128226744 is a wasteful number, since it uses less digits than its factorization.

128226744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1490 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 128226744 is about 11323.7248288715. The cubic root of 128226744 is about 504.2658272668.

The spelling of 128226744 in words is "one hundred twenty-eight million, two hundred twenty-six thousand, seven hundred forty-four".