28306231077 has 16 divisors (see below), whose sum is σ = 39600183168. Its totient is φ = 17950616640.

The previous prime is 28306231067. The next prime is 28306231127. The reversal of 28306231077 is 77013260382.

It is not a de Polignac number, because 28306231077 - 2⁴ = 28306231061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28306231067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120758 + ... + 1145735.

It is an arithmetic number, because the mean of its divisors is an integer number (2475011448).

Almost surely, 2^28306231077 is an apocalyptic number.

It is an amenable number.

28306231077 is a deficient number, since it is larger than the sum of its proper divisors (11293952091).

28306231077 is a wasteful number, since it uses less digits than its factorization.

28306231077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266700.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 28306231077 in words is "twenty-eight billion, three hundred six million, two hundred thirty-one thousand, seventy-seven".