128477955 has 16 divisors (see below), whose sum is σ = 207686304. Its totient is φ = 67814400.

The previous prime is 128477953. The next prime is 128477957. The reversal of 128477955 is 559774821.

It is an interprime number because it is at equal distance from previous prime (128477953) and next prime (128477957).

It is not a de Polignac number, because 128477955 - 2¹ = 128477953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128477953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42696 + ... + 45605.

It is an arithmetic number, because the mean of its divisors is an integer number (12980394).

Almost surely, 2^128477955 is an apocalyptic number.

128477955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128477955 is a deficient number, since it is larger than the sum of its proper divisors (79208349).

128477955 is an equidigital number, since it uses as much as digits as its factorization.

128477955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88406.

The product of its digits is 705600, while the sum is 48.

The square root of 128477955 is about 11334.8116437813. The cubic root of 128477955 is about 504.5949174490.

It can be divided in two parts, 12847 and 7955, that added together give a palindrome (20802).

The spelling of 128477955 in words is "one hundred twenty-eight million, four hundred seventy-seven thousand, nine hundred fifty-five".