128654408 has 8 divisors (see below), whose sum is σ = 241227030. Its totient is φ = 64327200.

The previous prime is 128654363. The next prime is 128654437. The reversal of 128654408 is 804456821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 124500964 + 4153444 = 11158^2 + 2038^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 8040893 + ... + 8040908.

Almost surely, 2^128654408 is an apocalyptic number.

It is an amenable number.

128654408 is a deficient number, since it is larger than the sum of its proper divisors (112572622).

128654408 is a wasteful number, since it uses less digits than its factorization.

128654408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16081807 (or 16081803 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 128654408 is about 11342.5926489494. The cubic root of 128654408 is about 504.8258171299.

The spelling of 128654408 in words is "one hundred twenty-eight million, six hundred fifty-four thousand, four hundred eight".