128887295 has 8 divisors (see below), whose sum is σ = 156259824. Its totient is φ = 102046464.

The previous prime is 128887289. The next prime is 128887303. The reversal of 128887295 is 592788821.

It is a happy number.

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 128887295 - 2¹⁸ = 128625151 is a prime.

It is a super-2 number, since 2×128887295² = 33223869624834050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132389 + ... + 133358.

It is an arithmetic number, because the mean of its divisors is an integer number (19532478).

Almost surely, 2^128887295 is an apocalyptic number.

128887295 is a deficient number, since it is larger than the sum of its proper divisors (27372529).

128887295 is an equidigital number, since it uses as much as digits as its factorization.

128887295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265849.

The product of its digits is 645120, while the sum is 50.

The square root of 128887295 is about 11352.8540464502. The cubic root of 128887295 is about 505.1302412171.

The spelling of 128887295 in words is "one hundred twenty-eight million, eight hundred eighty-seven thousand, two hundred ninety-five".