128335077 has 16 divisors (see below), whose sum is σ = 204751680. Its totient is φ = 78975216.

The previous prime is 128335069. The next prime is 128335093. The reversal of 128335077 is 770533821.

It is not a de Polignac number, because 128335077 - 2³ = 128335069 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128335007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182463 + ... + 183164.

It is an arithmetic number, because the mean of its divisors is an integer number (12796980).

Almost surely, 2^128335077 is an apocalyptic number.

It is an amenable number.

128335077 is a deficient number, since it is larger than the sum of its proper divisors (76416603).

128335077 is a wasteful number, since it uses less digits than its factorization.

128335077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365649 (or 365643 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 128335077 is about 11328.5072714811. The cubic root of 128335077 is about 504.4077977871.

Adding to 128335077 its reverse (770533821), we get a palindrome (898868898).

The spelling of 128335077 in words is "one hundred twenty-eight million, three hundred thirty-five thousand, seventy-seven".