28125677 has 4 divisors (see below), whose sum is σ = 28328160. Its totient is φ = 27923196.

The previous prime is 28125673. The next prime is 28125707. The reversal of 28125677 is 77652182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77652182 = 2 ⋅38826091.

It is a cyclic number.

It is not a de Polignac number, because 28125677 - 2² = 28125673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28125677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28125673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101033 + ... + 101310.

It is an arithmetic number, because the mean of its divisors is an integer number (7082040).

Almost surely, 2^28125677 is an apocalyptic number.

It is an amenable number.

28125677 is a deficient number, since it is larger than the sum of its proper divisors (202483).

28125677 is a wasteful number, since it uses less digits than its factorization.

28125677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202482.

The product of its digits is 47040, while the sum is 38.

The square root of 28125677 is about 5303.3646866871. The cubic root of 28125677 is about 304.1125398484.

The spelling of 28125677 in words is "twenty-eight million, one hundred twenty-five thousand, six hundred seventy-seven".