128280632 has 32 divisors (see below), whose sum is σ = 245548800. Its totient is φ = 62809824.

The previous prime is 128280619. The next prime is 128280641. The reversal of 128280632 is 236082821.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 218243 + ... + 218829.

It is an arithmetic number, because the mean of its divisors is an integer number (7673400).

Almost surely, 2^128280632 is an apocalyptic number.

It is an amenable number.

128280632 is a deficient number, since it is larger than the sum of its proper divisors (117268168).

128280632 is a wasteful number, since it uses less digits than its factorization.

128280632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1111 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 128280632 is about 11326.1040079985. The cubic root of 128280632 is about 504.3364575433.

The spelling of 128280632 in words is "one hundred twenty-eight million, two hundred eighty thousand, six hundred thirty-two".