128376078 has 16 divisors (see below), whose sum is σ = 271855440. Its totient is φ = 40274816.

The previous prime is 128376077. The next prime is 128376089. The reversal of 128376078 is 870673821.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128376077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629193 + ... + 629396.

It is an arithmetic number, because the mean of its divisors is an integer number (16990965).

Almost surely, 2^128376078 is an apocalyptic number.

128376078 is an abundant number, since it is smaller than the sum of its proper divisors (143479362).

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

128376078 is a wasteful number, since it uses less digits than its factorization.

128376078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258611.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 128376078 is about 11330.3167652101. The cubic root of 128376078 is about 504.4615088029.

It can be divided in two parts, 12837 and 6078, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 128376078 in words is "one hundred twenty-eight million, three hundred seventy-six thousand, seventy-eight".