128267467 has 4 divisors (see below), whose sum is σ = 128755440. Its totient is φ = 127779496.

The previous prime is 128267449. The next prime is 128267479. The reversal of 128267467 is 764762821.

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

It is a cyclic number.

It is not a de Polignac number, because 128267467 - 2⁷ = 128267339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128267407) 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, 243592 + ... + 244117.

It is an arithmetic number, because the mean of its divisors is an integer number (32188860).

Almost surely, 2^128267467 is an apocalyptic number.

128267467 is a deficient number, since it is larger than the sum of its proper divisors (487973).

128267467 is an equidigital number, since it uses as much as digits as its factorization.

128267467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487972.

The product of its digits is 225792, while the sum is 43.

The square root of 128267467 is about 11325.5228135393. The cubic root of 128267467 is about 504.3192041811.

The spelling of 128267467 in words is "one hundred twenty-eight million, two hundred sixty-seven thousand, four hundred sixty-seven".