127878864 has 40 divisors (see below), whose sum is σ = 341748960. Its totient is φ = 41155968.

The previous prime is 127878857. The next prime is 127878887. The reversal of 127878864 is 468878721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44542 + ... + 47325.

It is an arithmetic number, because the mean of its divisors is an integer number (8543724).

Almost surely, 2^127878864 is an apocalyptic number.

It is an amenable number.

127878864 is an abundant number, since it is smaller than the sum of its proper divisors (213870096).

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

127878864 is a wasteful number, since it uses less digits than its factorization.

127878864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91907 (or 91901 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 51.

The square root of 127878864 is about 11308.3537263388. The cubic root of 127878864 is about 503.8093887419.

The spelling of 127878864 in words is "one hundred twenty-seven million, eight hundred seventy-eight thousand, eight hundred sixty-four".