127028797 has 4 divisors (see below), whose sum is σ = 145175776. Its totient is φ = 108881820.

The previous prime is 127028791. The next prime is 127028801. The reversal of 127028797 is 797820721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 797820721 = 179 ⋅4457099.

It is a cyclic number.

It is not a de Polignac number, because 127028797 - 2³ = 127028789 is a prime.

It is a super-2 number, since 2×127028797² = 32272630534534418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127028791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9073479 + ... + 9073492.

It is an arithmetic number, because the mean of its divisors is an integer number (36293944).

Almost surely, 2^127028797 is an apocalyptic number.

It is an amenable number.

127028797 is a deficient number, since it is larger than the sum of its proper divisors (18146979).

127028797 is an equidigital number, since it uses as much as digits as its factorization.

127028797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18146978.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 127028797 is about 11270.7052574362. The cubic root of 127028797 is about 502.6905584871.

The spelling of 127028797 in words is "one hundred twenty-seven million, twenty-eight thousand, seven hundred ninety-seven".