28228677 has 8 divisors (see below), whose sum is σ = 38168640. Its totient is φ = 18553920.

The previous prime is 28228663. The next prime is 28228691. The reversal of 28228677 is 77682282.

It is an interprime number because it is at equal distance from previous prime (28228663) and next prime (28228691).

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

It is not a de Polignac number, because 28228677 - 2¹⁰ = 28227653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28228777) 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, 66052 + ... + 66477.

It is an arithmetic number, because the mean of its divisors is an integer number (4771080).

Almost surely, 2^28228677 is an apocalyptic number.

It is an amenable number.

28228677 is a deficient number, since it is larger than the sum of its proper divisors (9939963).

28228677 is a wasteful number, since it uses less digits than its factorization.

28228677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132603.

The product of its digits is 150528, while the sum is 42.

The square root of 28228677 is about 5313.0666286054. The cubic root of 28228677 is about 304.4833212302.

The spelling of 28228677 in words is "twenty-eight million, two hundred twenty-eight thousand, six hundred seventy-seven".