128654402 has 32 divisors (see below), whose sum is σ = 216691200. Its totient is φ = 56989440.

The previous prime is 128654363. The next prime is 128654437. The reversal of 128654402 is 204456821.

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 15 ways as a sum of consecutive naturals, for example, 37349 + ... + 40647.

It is an arithmetic number, because the mean of its divisors is an integer number (6771600).

Almost surely, 2^128654402 is an apocalyptic number.

128654402 is a deficient number, since it is larger than the sum of its proper divisors (88036798).

128654402 is a wasteful number, since it uses less digits than its factorization.

128654402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 128654402 is about 11342.5923844596. The cubic root of 128654402 is about 504.8258092821.

The spelling of 128654402 in words is "one hundred twenty-eight million, six hundred fifty-four thousand, four hundred two".