28082977 has 8 divisors (see below), whose sum is σ = 31558464. Its totient is φ = 24795408.

The previous prime is 28082959. The next prime is 28082981. The reversal of 28082977 is 77928082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28082977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28082947) 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, 46663 + ... + 47260.

It is an arithmetic number, because the mean of its divisors is an integer number (3944808).

Almost surely, 2^28082977 is an apocalyptic number.

It is an amenable number.

28082977 is a deficient number, since it is larger than the sum of its proper divisors (3475487).

28082977 is a wasteful number, since it uses less digits than its factorization.

28082977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93959.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 28082977 is about 5299.3374114129. The cubic root of 28082977 is about 303.9585621324.

The spelling of 28082977 in words is "twenty-eight million, eighty-two thousand, nine hundred seventy-seven".