28772127 has 6 divisors (see below), whose sum is σ = 41559752. Its totient is φ = 19181412.

The previous prime is 28772077. The next prime is 28772141. The reversal of 28772127 is 72127782.

It is not a de Polignac number, because 28772127 - 2⁶ = 28772063 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 28772091 and 28772100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28772167) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1598443 + ... + 1598460.

Almost surely, 2^28772127 is an apocalyptic number.

28772127 is a deficient number, since it is larger than the sum of its proper divisors (12787625).

28772127 is a wasteful number, since it uses less digits than its factorization.

28772127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196909 (or 3196906 counting only the distinct ones).

The product of its digits is 21952, while the sum is 36.

The square root of 28772127 is about 5363.9656039166. The cubic root of 28772127 is about 306.4248551929.

The spelling of 28772127 in words is "twenty-eight million, seven hundred seventy-two thousand, one hundred twenty-seven".