128977376 has 96 divisors (see below), whose sum is σ = 293932800. Its totient is φ = 55137280.

The previous prime is 128977361. The next prime is 128977403. The reversal of 128977376 is 673779821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720455 + ... + 720633.

It is an arithmetic number, because the mean of its divisors is an integer number (3061800).

Almost surely, 2^128977376 is an apocalyptic number.

128977376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128977376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146966400).

128977376 is an abundant number, since it is smaller than the sum of its proper divisors (164955424).

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

128977376 is a wasteful number, since it uses less digits than its factorization.

128977376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 304 counting only the distinct ones).

The product of its digits is 889056, while the sum is 50.

The square root of 128977376 is about 11356.8206818634. The cubic root of 128977376 is about 505.2478945011.

The spelling of 128977376 in words is "one hundred twenty-eight million, nine hundred seventy-seven thousand, three hundred seventy-six".