28676977 has 16 divisors (see below), whose sum is σ = 34974720. Its totient is φ = 22952448.

The previous prime is 28676959. The next prime is 28676993. The reversal of 28676977 is 77967682.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-28676977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28676927) 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, 15424 + ... + 17182.

It is an arithmetic number, because the mean of its divisors is an integer number (2185920).

Almost surely, 2^28676977 is an apocalyptic number.

It is an amenable number.

28676977 is a deficient number, since it is larger than the sum of its proper divisors (6297743).

28676977 is a wasteful number, since it uses less digits than its factorization.

28676977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920.

The product of its digits is 1778112, while the sum is 52.

The square root of 28676977 is about 5355.0888881512. The cubic root of 28676977 is about 306.0866977772.

The spelling of 28676977 in words is "twenty-eight million, six hundred seventy-six thousand, nine hundred seventy-seven".