128350776 has 64 divisors (see below), whose sum is σ = 339926400. Its totient is φ = 40272768.

The previous prime is 128350759. The next prime is 128350777. The reversal of 128350776 is 677053821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128350777) 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, 78075 + ... + 79701.

It is an arithmetic number, because the mean of its divisors is an integer number (5311350).

Almost surely, 2^128350776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128350776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169963200).

128350776 is an abundant number, since it is smaller than the sum of its proper divisors (211575624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128350776 is a wasteful number, since it uses less digits than its factorization.

128350776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828 (or 1824 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 128350776 is about 11329.2001482894. The cubic root of 128350776 is about 504.4283647158.

The spelling of 128350776 in words is "one hundred twenty-eight million, three hundred fifty thousand, seven hundred seventy-six".