128573267 has 4 divisors (see below), whose sum is σ = 129511896. Its totient is φ = 127634640.

The previous prime is 128573257. The next prime is 128573273. The reversal of 128573267 is 762375821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 762375821 = 103 ⋅7401707.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128573267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128573257) 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, 469109 + ... + 469382.

It is an arithmetic number, because the mean of its divisors is an integer number (32377974).

Almost surely, 2^128573267 is an apocalyptic number.

128573267 is a deficient number, since it is larger than the sum of its proper divisors (938629).

128573267 is an equidigital number, since it uses as much as digits as its factorization.

128573267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938628.

The product of its digits is 141120, while the sum is 41.

The square root of 128573267 is about 11339.0152570671. The cubic root of 128573267 is about 504.7196653425.

The spelling of 128573267 in words is "one hundred twenty-eight million, five hundred seventy-three thousand, two hundred sixty-seven".