128445026 has 4 divisors (see below), whose sum is σ = 192667542. Its totient is φ = 64222512.

The previous prime is 128445011. The next prime is 128445029. The reversal of 128445026 is 620544821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 98029801 + 30415225 = 9901^2 + 5515^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128444983 and 128445001.

It is not an unprimeable number, because it can be changed into a prime (128445029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32111255 + ... + 32111258.

Almost surely, 2^128445026 is an apocalyptic number.

128445026 is a deficient number, since it is larger than the sum of its proper divisors (64222516).

128445026 is an equidigital number, since it uses as much as digits as its factorization.

128445026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64222515.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 128445026 is about 11333.3589901670. The cubic root of 128445026 is about 504.5518044086.

Adding to 128445026 its reverse (620544821), we get a palindrome (748989847).

The spelling of 128445026 in words is "one hundred twenty-eight million, four hundred forty-five thousand, twenty-six".