127828917 has 12 divisors (see below), whose sum is σ = 192669984. Its totient is φ = 81513960.

The previous prime is 127828907. The next prime is 127828919. The reversal of 127828917 is 719828721.

It is not a de Polignac number, because 127828917 - 2¹² = 127824821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127828919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308559 + ... + 308972.

It is an arithmetic number, because the mean of its divisors is an integer number (16055832).

Almost surely, 2^127828917 is an apocalyptic number.

It is an amenable number.

127828917 is a deficient number, since it is larger than the sum of its proper divisors (64841067).

127828917 is a wasteful number, since it uses less digits than its factorization.

127828917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617560 (or 617557 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 127828917 is about 11306.1450990158. The cubic root of 127828917 is about 503.7437874803.

The spelling of 127828917 in words is "one hundred twenty-seven million, eight hundred twenty-eight thousand, nine hundred seventeen".