128674377 has 24 divisors (see below), whose sum is σ = 211937544. Its totient is φ = 74525184.

The previous prime is 128674369. The next prime is 128674379. The reversal of 128674377 is 773476821.

It can be written as a sum of positive squares in 4 ways, for example, as 13133376 + 115541001 = 3624^2 + 10749^2 .

It is not a de Polignac number, because 128674377 - 2³ = 128674369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128674379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30358 + ... + 34335.

It is an arithmetic number, because the mean of its divisors is an integer number (8830731).

Almost surely, 2^128674377 is an apocalyptic number.

128674377 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

128674377 is a deficient number, since it is larger than the sum of its proper divisors (83263167).

128674377 is a wasteful number, since it uses less digits than its factorization.

128674377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64729 (or 64726 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 128674377 is about 11343.4728809126. The cubic root of 128674377 is about 504.8519345022.

The spelling of 128674377 in words is "one hundred twenty-eight million, six hundred seventy-four thousand, three hundred seventy-seven".