28766477867 has 16 divisors (see below), whose sum is σ = 30256630272. Its totient is φ = 27296554560.

The previous prime is 28766477843. The next prime is 28766477881. The reversal of 28766477867 is 76877466782.

It is not a de Polignac number, because 28766477867 - 2¹⁴ = 28766461483 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28766477797 and 28766477806.

It is not an unprimeable number, because it can be changed into a prime (28766477827) 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, 7973378 + ... + 7976984.

It is an arithmetic number, because the mean of its divisors is an integer number (1891039392).

Almost surely, 2^28766477867 is an apocalyptic number.

28766477867 is a deficient number, since it is larger than the sum of its proper divisors (1490152405).

28766477867 is a wasteful number, since it uses less digits than its factorization.

28766477867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6298.

The product of its digits is 265531392, while the sum is 68.

The spelling of 28766477867 in words is "twenty-eight billion, seven hundred sixty-six million, four hundred seventy-seven thousand, eight hundred sixty-seven".