28366977 has 8 divisors (see below), whose sum is σ = 37881216. Its totient is φ = 18882032.

The previous prime is 28366969. The next prime is 28366979. The reversal of 28366977 is 77966382.

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 28366977 - 2³ = 28366969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28366979) 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, 4953 + ... + 9014.

It is an arithmetic number, because the mean of its divisors is an integer number (4735152).

Almost surely, 2^28366977 is an apocalyptic number.

It is an amenable number.

28366977 is a deficient number, since it is larger than the sum of its proper divisors (9514239).

28366977 is a wasteful number, since it uses less digits than its factorization.

28366977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14647.

The product of its digits is 762048, while the sum is 48.

The square root of 28366977 is about 5326.0658088311. The cubic root of 28366977 is about 304.9797603697.

The spelling of 28366977 in words is "twenty-eight million, three hundred sixty-six thousand, nine hundred seventy-seven".