128506684 has 6 divisors (see below), whose sum is σ = 224886704. Its totient is φ = 64253340.

The previous prime is 128506673. The next prime is 128506691. The reversal of 128506684 is 486605821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16063332 + ... + 16063339.

Almost surely, 2^128506684 is an apocalyptic number.

It is an amenable number.

128506684 is a deficient number, since it is larger than the sum of its proper divisors (96380020).

128506684 is a wasteful number, since it uses less digits than its factorization.

128506684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32126675 (or 32126673 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 128506684 is about 11336.0788635224. The cubic root of 128506684 is about 504.6325255273.

The spelling of 128506684 in words is "one hundred twenty-eight million, five hundred six thousand, six hundred eighty-four".