128358667 has 8 divisors (see below), whose sum is σ = 130499072. Its totient is φ = 126225000.

The previous prime is 128358589. The next prime is 128358673. The reversal of 128358667 is 766853821.

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

It is a cyclic number.

It is not a de Polignac number, because 128358667 - 2⁷ = 128358539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128358677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49042 + ... + 51592.

It is an arithmetic number, because the mean of its divisors is an integer number (16312384).

Almost surely, 2^128358667 is an apocalyptic number.

128358667 is a deficient number, since it is larger than the sum of its proper divisors (2140405).

128358667 is an equidigital number, since it uses as much as digits as its factorization.

128358667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369.

The product of its digits is 483840, while the sum is 46.

The square root of 128358667 is about 11329.5484022974. The cubic root of 128358667 is about 504.4387019151.

The spelling of 128358667 in words is "one hundred twenty-eight million, three hundred fifty-eight thousand, six hundred sixty-seven".