128952235 has 4 divisors (see below), whose sum is σ = 154742688. Its totient is φ = 103161784.

The previous prime is 128952217. The next prime is 128952247. The reversal of 128952235 is 532259821.

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 128952235 - 2²¹ = 126855083 is a prime.

It is a super-2 number, since 2×128952235² = 33257357822990450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128952194 and 128952203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12895219 + ... + 12895228.

It is an arithmetic number, because the mean of its divisors is an integer number (38685672).

Almost surely, 2^128952235 is an apocalyptic number.

128952235 is a deficient number, since it is larger than the sum of its proper divisors (25790453).

128952235 is an equidigital number, since it uses as much as digits as its factorization.

128952235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25790452.

The product of its digits is 43200, while the sum is 37.

The square root of 128952235 is about 11355.7137600417. The cubic root of 128952235 is about 505.2150637750.

The spelling of 128952235 in words is "one hundred twenty-eight million, nine hundred fifty-two thousand, two hundred thirty-five".