128366026 has 8 divisors (see below), whose sum is σ = 193775940. Its totient is φ = 63774048.

The previous prime is 128365981. The next prime is 128366027. The reversal of 128366026 is 620663821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 104346225 + 24019801 = 10215^2 + 4901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 128365982 and 128366000.

It is not an unprimeable number, because it can be changed into a prime (128366027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204091 + ... + 204718.

Almost surely, 2^128366026 is an apocalyptic number.

128366026 is a deficient number, since it is larger than the sum of its proper divisors (65409914).

128366026 is a wasteful number, since it uses less digits than its factorization.

128366026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408968.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 128366026 is about 11329.8731678691. The cubic root of 128366026 is about 504.4483418134.

The spelling of 128366026 in words is "one hundred twenty-eight million, three hundred sixty-six thousand, twenty-six".