128106867 has 16 divisors (see below), whose sum is σ = 197406720. Its totient is φ = 72380352.

The previous prime is 128106841. The next prime is 128106871. The reversal of 128106867 is 768601821.

It is not a de Polignac number, because 128106867 - 2¹⁴ = 128090483 is a prime.

It is a super-2 number, since 2×128106867² = 32822738745111378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128106817) 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, 32403 + ... + 36140.

It is an arithmetic number, because the mean of its divisors is an integer number (12337920).

Almost surely, 2^128106867 is an apocalyptic number.

128106867 is a deficient number, since it is larger than the sum of its proper divisors (69299853).

128106867 is an equidigital number, since it uses as much as digits as its factorization.

128106867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68642.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 128106867 is about 11318.4304123849. The cubic root of 128106867 is about 504.1086350922.

The spelling of 128106867 in words is "one hundred twenty-eight million, one hundred six thousand, eight hundred sixty-seven".