127838880 has 144 divisors (see below), whose sum is σ = 469876680. Its totient is φ = 31463424.

The previous prime is 127838863. The next prime is 127838891. The reversal of 127838880 is 88838721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 82519056 + 45319824 = 9084^2 + 6732^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15306 + ... + 22134.

Almost surely, 2^127838880 is an apocalyptic number.

127838880 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 127838880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234938340).

127838880 is an abundant number, since it is smaller than the sum of its proper divisors (342037800).

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

127838880 is a wasteful number, since it uses less digits than its factorization.

127838880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6863 (or 6852 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 127838880 is about 11306.5856915339. The cubic root of 127838880 is about 503.7568744226.

The spelling of 127838880 in words is "one hundred twenty-seven million, eight hundred thirty-eight thousand, eight hundred eighty".