28348106977 has 4 divisors (see below), whose sum is σ = 28455894720. Its totient is φ = 28240319236.

The previous prime is 28348106957. The next prime is 28348107013. The reversal of 28348106977 is 77960184382.

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.

It is a cyclic number.

It is not a de Polignac number, because 28348106977 - 2¹¹ = 28348104929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28348106957) 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, 53893477 + ... + 53894002.

It is an arithmetic number, because the mean of its divisors is an integer number (7113973680).

Almost surely, 2^28348106977 is an apocalyptic number.

It is an amenable number.

28348106977 is a deficient number, since it is larger than the sum of its proper divisors (107787743).

28348106977 is a wasteful number, since it uses less digits than its factorization.

28348106977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107787742.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 28348106977 in words is "twenty-eight billion, three hundred forty-eight million, one hundred six thousand, nine hundred seventy-seven".