128527077 has 32 divisors (see below), whose sum is σ = 208696320. Its totient is φ = 68722560.

The previous prime is 128527073. The next prime is 128527079. The reversal of 128527077 is 770725821.

It is not a de Polignac number, because 128527077 - 2² = 128527073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128527073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31177 + ... + 35057.

It is an arithmetic number, because the mean of its divisors is an integer number (6521760).

Almost surely, 2^128527077 is an apocalyptic number.

It is an amenable number.

128527077 is a deficient number, since it is larger than the sum of its proper divisors (80169243).

128527077 is a wasteful number, since it uses less digits than its factorization.

128527077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993.

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 128527077 is about 11336.9783011171. The cubic root of 128527077 is about 504.6592178530.

The spelling of 128527077 in words is "one hundred twenty-eight million, five hundred twenty-seven thousand, seventy-seven".