128280746 has 32 divisors (see below), whose sum is σ = 220466880. Its totient is φ = 55440000.

The previous prime is 128280721. The next prime is 128280749. The reversal of 128280746 is 647082821.

It is not an unprimeable number, because it can be changed into a prime (128280749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41246 + ... + 44246.

It is an arithmetic number, because the mean of its divisors is an integer number (6889590).

Almost surely, 2^128280746 is an apocalyptic number.

128280746 is a deficient number, since it is larger than the sum of its proper divisors (92186134).

128280746 is a wasteful number, since it uses less digits than its factorization.

128280746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 128280746 is about 11326.1090406194. The cubic root of 128280746 is about 504.3366069406.

It can be divided in two parts, 1282 and 80746, that added together give a palindrome (82028).

The spelling of 128280746 in words is "one hundred twenty-eight million, two hundred eighty thousand, seven hundred forty-six".