128266270 has 16 divisors (see below), whose sum is σ = 251868528. Its totient is φ = 46642240.

The previous prime is 128266261. The next prime is 128266277. The reversal of 128266270 is 72662821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128266277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582919 + ... + 583138.

It is an arithmetic number, because the mean of its divisors is an integer number (15741783).

Almost surely, 2^128266270 is an apocalyptic number.

128266270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128266270 is a deficient number, since it is larger than the sum of its proper divisors (123602258).

128266270 is a wasteful number, since it uses less digits than its factorization.

128266270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166075.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 128266270 is about 11325.4699681735. The cubic root of 128266270 is about 504.3176353968.

The spelling of 128266270 in words is "one hundred twenty-eight million, two hundred sixty-six thousand, two hundred seventy".