28672077 has 16 divisors (see below), whose sum is σ = 44872832. Its totient is φ = 15940800.

The previous prime is 28672073. The next prime is 28672093. The reversal of 28672077 is 77027682.

It is not a de Polignac number, because 28672077 - 2² = 28672073 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28672073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17674 + ... + 19227.

It is an arithmetic number, because the mean of its divisors is an integer number (2804552).

Almost surely, 2^28672077 is an apocalyptic number.

It is an amenable number.

28672077 is a deficient number, since it is larger than the sum of its proper divisors (16200755).

28672077 is a wasteful number, since it uses less digits than its factorization.

28672077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36948.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 28672077 is about 5354.6313598604. The cubic root of 28672077 is about 306.0692632309.

The spelling of 28672077 in words is "twenty-eight million, six hundred seventy-two thousand, seventy-seven".