127520780 has 48 divisors (see below), whose sum is σ = 285811680. Its totient is φ = 47651328.

The previous prime is 127520779. The next prime is 127520803. The reversal of 127520780 is 87025721.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25442 + ... + 30038.

It is an arithmetic number, because the mean of its divisors is an integer number (5954410).

Almost surely, 2^127520780 is an apocalyptic number.

127520780 is a gapful number since it is divisible by the number (10) 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 127520780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142905840).

127520780 is an abundant number, since it is smaller than the sum of its proper divisors (158290900).

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

127520780 is a wasteful number, since it uses less digits than its factorization.

127520780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698 (or 4696 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 127520780 is about 11292.5099070136. The cubic root of 127520780 is about 503.3386965887.

The spelling of 127520780 in words is "one hundred twenty-seven million, five hundred twenty thousand, seven hundred eighty".