128010765 has 32 divisors (see below), whose sum is σ = 217869696. Its totient is φ = 63959040.

The previous prime is 128010763. The next prime is 128010791. The reversal of 128010765 is 567010821.

It is not a de Polignac number, because 128010765 - 2¹ = 128010763 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128010763) 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, 60414 + ... + 62496.

It is an arithmetic number, because the mean of its divisors is an integer number (6808428).

Almost surely, 2^128010765 is an apocalyptic number.

128010765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128010765 is a deficient number, since it is larger than the sum of its proper divisors (89858931).

128010765 is a wasteful number, since it uses less digits than its factorization.

128010765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 128010765 is about 11314.1842392636. The cubic root of 128010765 is about 503.9825477391.

The spelling of 128010765 in words is "one hundred twenty-eight million, ten thousand, seven hundred sixty-five".