28866392377 has 8 divisors (see below), whose sum is σ = 30574436256. Its totient is φ = 27159461952.

The previous prime is 28866392369. The next prime is 28866392381. The reversal of 28866392377 is 77329366882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28866392377 - 2³ = 28866392369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28866392677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224683 + ... + 328960.

It is an arithmetic number, because the mean of its divisors is an integer number (3821804532).

Almost surely, 2^28866392377 is an apocalyptic number.

It is an amenable number.

28866392377 is a deficient number, since it is larger than the sum of its proper divisors (1708043879).

28866392377 is a wasteful number, since it uses less digits than its factorization.

28866392377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556727.

The product of its digits is 36578304, while the sum is 61.

The spelling of 28866392377 in words is "twenty-eight billion, eight hundred sixty-six million, three hundred ninety-two thousand, three hundred seventy-seven".