128646104 has 8 divisors (see below), whose sum is σ = 241211460. Its totient is φ = 64323048.

The previous prime is 128646101. The next prime is 128646109. The reversal of 128646104 is 401646821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128646101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8040374 + ... + 8040389.

Almost surely, 2^128646104 is an apocalyptic number.

It is an amenable number.

128646104 is a deficient number, since it is larger than the sum of its proper divisors (112565356).

128646104 is a wasteful number, since it uses less digits than its factorization.

128646104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16080769 (or 16080765 counting only the distinct ones).

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

The square root of 128646104 is about 11342.2265891667. The cubic root of 128646104 is about 504.8149555672.

The spelling of 128646104 in words is "one hundred twenty-eight million, six hundred forty-six thousand, one hundred four".